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HERCULES 575 BACK-UP RING

    575 Urethane Back-Up Ring

    Molded of 95A Durometer Urethane these back-up rings provide excellent extrusion resistance. Stretched for installation, they return quickly to their original size for easy installation.
    NOTE: Sizes (Dash No.) correspond to standard o-ring numbers.

    SEAL INFORMATION
    MATERIAL95A DUROMETER
    URETHANE
    TEMPERATURE
    RANGE
    -65° TO +220° F
    PRESSURE
    RANGE
    VARIES ACCORD
    ING TO DIAMETRAL
    CLEARANCE
    Part NumberA
    Nom. ID
    B
    Nom. OD
    C
    Nom. Ht
    1/16″ C/S
    575-004
    575-005
    575-006
    575-007
    575-008
    575-009
    575-010
    575-011
    575-012
    575-013
    575-014
    575-015
    575-016
    575-017
    575-018
    575-019
    575-020
    575-021
    575-022
    575-023
    575-024
    575-025
    575-026
    575-027
    575-028
    575-029
    575-030
    575-031
    575-032
    575-033
    575-034
    575-035
    575-036
    575-037
    575-038
    575-039
    575-040
    575-041
    575-042
    575-043
    575-044
    575-045
    575-046
    575-047
    575-048
    575-049
    575-050
    5/64
    3/32
    1/8
    5/32
    3/16
    7/32
    1/4
    5/16
    3/8
    7/16
    1/2
    9/16
    5/8
    11/16
    3/4
    13/16
    7/8
    15/16
    1
    1-1/16
    1-1/8
    1-3/16
    1-1/4
    1-5/16
    1-3/8
    1-1/2
    1-5/8
    1-3/4
    1-7/8
    2
    2-1/8
    2-1/4
    2-3/8
    2-1/2
    2-5/8
    2-3/4
    2-7/8
    3
    3-1/4
    3-1/2
    3-3/4
    4
    4-1/4
    4-1/2
    4-3/4
    5
    5-1/4
    13/64
    7/32
    1/4
    9/32
    5/16
    11/32
    3/8
    7/16
    1/2
    9/16
    5/8
    11/16
    3/4
    13/16
    7/8
    15/16
    1
    1-1/16
    1-1/8
    1-3/16
    1-1/4
    1-5/16
    1-3/8
    1-7/16
    1-1/2
    1-5/8
    1-3/4
    1-7/8
    2
    2-1/8
    2-1/4
    2-3/8
    2-1/2
    2-5/8
    2-3/4
    2-7/8
    3
    3-1/8
    3-3/8
    3-5/8
    3-7/8
    4-1/8
    4-3/8
    4-5/8
    4-7/8
    5-1/8
    5-3/8
    .045
    .045
    .045
    .045
    .045
    .045
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    3/32″ C/S
    575-102
    575-103
    575-104
    575-105
    575-106
    575-107
    575-108
    575-109
    575-110
    575-111
    575-112
    575-113
    575-114
    575-115
    575-116
    575-117
    575-118
    575-119
    575-120
    575-121
    575-122
    575-123
    575-124
    575-125
    575-126
    575-127
    575-128
    575-129
    575-130
    575-131
    575-132
    575-133
    575-134
    575-135
    575-136
    575-137
    575-138
    575-139
    575-140
    575-141
    575-142
    575-143
    575-144
    575-145
    575-146
    575-147
    575-148
    575-149
    575-150
    575-151
    575-152
    575-153
    575-154
    575-155
    575-156
    575-157
    575-158
    575-159
    575-160
    575-161
    575-162
    575-163
    575-164
    575-165
    575-166
    575-167
    575-168
    575-169
    575-170
    575-171
    575-172
    575-173
    575-174
    575-175
    1/16
    3/32
    1/8
    5/32
    3/16
    7/32
    1/4
    5/16
    3/8
    7/16
    1/2
    9/16
    5/8
    11/16
    3/4
    13/16
    7/8
    15/16
    1
    1-1/16
    1-1/8
    1-3/16
    1-1/4
    1-5/16
    1-3/8
    1-7/16
    1-1/2
    1-9/16
    1-5/8
    1-11/16
    1-3/4
    1-13/16
    1-7/8
    1-15/16
    2
    2-1/16
    2-1/8
    2-3/16
    2-1/4
    2-5/16
    2-3/8
    2-7/16
    2-1/2
    2-9/16
    2-5/8
    2-11/16
    2-3/4
    2-13/16
    2-7/8
    3
    3-1/4
    3-1/2
    3-3/4
    4
    4-1/4
    4-1/2
    4-3/4
    5
    5-1/4
    5-1/2
    5-3/4
    6
    6-1/4
    6-1/2
    6-3/4
    7
    7-1/4
    7-1/2
    7-3/4
    8
    8-1/4
    8-1/2
    8-3/4
    9
    1/4
    9/32
    5/16
    11/32
    3/8
    13/32
    7/16
    .4
    9/16
    5/8
    11/16
    3/4
    13/16
    7/8
    15/16
    1
    1-1/16
    1-1/8
    1-3/16
    1-1/4
    1-5/16
    1-3/8
    1-7/16
    1-1/2
    1-9/16
    1-5/8
    1-11/16
    1-3/4
    1-13/16
    1-7/8
    1-15/16
    2
    2-1/16
    2-1/8
    2-3/16
    2-1/4
    2-5/16
    2-3/8
    2-7/16
    2-1/2
    2-9/16
    2-5/8
    2-11/16
    2-3/4
    2-13/16
    2-7/8
    2-15/16
    3
    3-1/16
    3-3/16
    3-7/16
    3-11/16
    3-15/16
    4-3/16
    4-7/16
    4-11/16
    4-15/16
    5-3/16
    5-7/16
    5-11/16
    5-15/16
    6-3/16
    6-7/16
    6-11/16
    6-15/16
    7-3/16
    7-7/16
    7-11/16
    7-15/16
    8-3/16
    8-7/16
    8-11/16
    8-15/16
    9-3/16
    .045
    .045
    .05
    .045
    .045
    .045
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    1/8″ C/S
    575-205
    575-206
    575-207
    575-208
    575-209
    575-210
    575-211
    575-212
    575-213
    575-214
    575-215
    575-216
    575-217
    575-218
    575-219
    575-220
    575-221
    575-222
    575-223
    575-224
    575-225
    575-226
    575-227
    575-228
    575-229
    575-230
    575-231
    575-232
    575-233
    575-234
    575-235
    575-236
    575-237
    575-238
    575-239
    575-240
    575-241
    575-242
    575-243
    575-244
    575-245
    575-246
    575-247
    575-248
    575-249
    575-250
    575-251
    575-252
    575-253
    575-254
    575-255
    575-256
    575-257
    575-258
    575-259
    575-260
    575-261
    575-262
    575-263
    575-264
    575-265
    575-266
    575-267
    575-268
    575-269
    575-270
    575-271
    575-272
    575-273
    575-274
    575-275
    575-276
    575-278
    575-279
    7/16
    1/2
    9/16
    5/8
    11/16
    3/4
    13/16
    7/8
    15/16
    1
    1-1/16
    1-1/8
    1-3/16
    1-1/4
    1-5/16
    1-3/8
    1-7/16
    1-1/2
    1-5/8
    1-3/4
    1-7/8
    2
    2-1/8
    2-1/4
    2-3/8
    2-1/2
    2-5/8
    2-3/4
    2-7/8
    3
    3-1/8
    3-1/4
    3-3/8
    3-1/2
    3-5/8
    3-3/4
    3-7/8
    4
    4-1/8
    4-1/4
    4-3/8
    4-1/2
    4-5/8
    4-3/4
    4-7/8
    5
    5-1/8
    5-1/4
    5-3/8
    5-1/2
    5-5/8
    5-3/4
    5-7/8
    6
    6-1/4
    6-1/2
    6-3/4
    7
    7-1/4
    7-1/2
    7-3/4
    8
    8-1/4
    8-1/2
    8-3/4
    9
    9-1/4
    9-1/2
    9-3/4
    10
    10-1/2
    11
    12
    13
    11/16
    3/4
    13/16
    7/8
    15/16
    1
    1-1/16
    1-1/8
    1-3/16
    1-1/4
    1-5/16
    1-3/8
    1-7/16
    1-1/2
    1-9/16
    1-5/8
    1-11/16
    1-3/4
    1-7/8
    2
    2-1/8
    2-1/4
    2-3/8
    2-1/2
    2-5/8
    2-3/4
    2-7/8
    3
    3-1/8
    3-1/4
    3-3/8
    3-1/2
    3-5/8
    3-3/4
    3-7/8
    4
    4-1/8
    4-1/4
    4-3/8
    4-1/2
    4-5/8
    4-3/4
    4-7/8
    5
    5-1/8
    5-1/4
    5-3/8
    5-1/2
    5-5/8
    5-3/4
    5-7/8
    6
    6-1/8
    6-1/4
    6-1/2
    6-3/4
    7
    7-1/4
    7-1/2
    7-3/4
    8
    8-1/4
    8-1/2
    8-3/4
    9
    9-1/4
    9-1/2
    9-3/4
    10
    10-1/4
    10-3/4
    11-1/4
    12-1/4
    13-1/4
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .04
    .163″ C/S
    575-6.165X0.163X0.062U6.1656.491.062
    3/16″ C/S
    575-309
    575-310
    575-311
    575-312
    575-313
    575-314
    575-315
    575-316
    575-317
    575-318
    575-319
    575-320
    575-321
    575-322
    575-323
    575-324
    575-325
    575-326
    575-327
    575-328
    575-329
    575-330
    575-331
    575-332
    575-333
    575-334
    575-335
    575-336
    575-337
    575-338
    575-339
    575-340
    575-341
    575-342
    575-343
    575-344
    575-345
    575-346
    575-347
    575-348
    575-349
    575-350
    575-351
    575-352
    575-353
    575-354
    575-355
    575-356
    575-357
    575-358
    575-359
    575-360
    575-361
    575-362
    575-363
    575-364
    575-365
    575-366
    575-367
    575-368
    575-369
    575-370
    575-371
    575-372
    575-373
    575-374
    575-375
    575-376
    575-377
    575-379
    575-381
    575-382
    575-383
    7/16
    1/2
    9/16
    5/8
    11/16
    3/4
    13/16
    7/8
    15/16
    1
    1-1/16
    1-1/8
    1-3/16
    1-1/4
    1-5/16
    1-3/8
    1-1/2
    1-5/8
    1-3/4
    1-7/8
    2
    2-1/8
    2-1/4
    2-3/8
    2-1/2
    2-5/8
    2-3/4
    2-7/8
    3
    3-1/8
    3-1/4
    3-3/8
    3-1/2
    3-5/8
    3-3/4
    3-7/8
    4
    4-1/8
    4-1/4
    4-3/8
    4-1/2
    4-5/8
    4-3/4
    4-7/8
    5
    5-1/8
    5-1/4
    5-3/8
    5-1/2
    5-5/8
    5-3/4
    5-7/8
    6
    6-1/4
    6-1/2
    6-3/4
    7
    7-1/4
    7-1/2
    7-3/4
    8
    8-1/4
    8-1/2
    8-3/4
    9
    9-1/4
    9-1/2
    9-3/4
    10
    11
    12
    13
    14
    13/16
    7/8
    15/16
    1
    1-1/16
    1-1/8
    1-3/16
    1-1/4
    1-5/16
    1-3/8
    1-7/16
    1-1/2
    1-9/16
    1-5/8
    1-11/16
    1-3/4
    1-7/8
    2
    2-1/8
    2-1/4
    2-3/8
    2-1/2
    2-5/8
    2-3/4
    2-7/8
    3
    3-1/8
    3-1/4
    3-3/8
    3-1/2
    3-5/8
    3-3/4
    3-7/8
    4
    4-1/8
    4-1/4
    4-3/8
    4-1/2
    4-5/8
    4-3/4
    4-7/8
    5
    5-1/8
    5-1/4
    5-3/8
    5-1/2
    5-5/8
    5-3/4
    5-7/8
    6
    6-1/8
    6-1/4
    6-3/8
    6-5/8
    6-7/8
    7-1/8
    7-3/8
    7-5/8
    7-7/8
    8-1/8
    8-3/8
    8-5/8
    8-7/8
    9-1/8
    9-3/8
    9-5/8
    9-7/8
    10-1/8
    10-3/8
    11-3/8
    12-3/8
    13-3/8
    14-3/8
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    .055
    1/4″ C/S
    575-421
    575-425
    575-426
    575-427
    575-428
    575-429
    575-430
    575-431
    575-432
    575-433
    575-434
    575-435
    575-436
    575-437
    575-438
    575-439
    575-440
    575-441
    575-442
    575-443
    575-444
    575-445
    575-446
    575-447
    575-448
    575-449
    575-450
    575-451
    575-452
    575-453
    575-454
    575-455
    575-456
    575-457
    575-460
    4
    4-1/2
    4-5/8
    4-3/4
    4-7/8
    5
    5-1/8
    5-1/4
    5-3/8
    5-1/2
    5-5/8
    5-3/4
    5-7/8
    6
    6-1/4
    6-1/2
    6-3/4
    7
    7-1/4
    7-1/2
    7-3/4
    8
    8-1/2
    9
    9-1/2
    10
    10-1/2
    11
    11-1/2
    12
    12-1/2
    13
    13-1/2
    14
    15-1/2
    4-1/2
    5
    5-1/8
    5-1/4
    5-3/8
    5-1/2
    5-5/8
    5-3/4
    5-7/8
    6
    6-1/8
    6-1/4
    6-3/8
    6-1/2
    6-3/4
    7
    7-1/4
    7-1/2
    7-3/4
    8
    8-1/4
    8-1/2
    9
    9-1/2
    10
    10-1/2
    11
    11-1/2
    12
    12-1/2
    13
    13-1/2
    14
    14-1/2
    16
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .085
    .096
    .085
    .085
    .085
    .085

    575 PTFE Back-Up Ring

    Letter suffix: T = Solid, ST = Split, TS = Spiral Cut, TW = .085 Wide

    SEAL INFORMATION
    MATERIALPTFE
    TEMPERATURE
    RANGE
    -100° TO +500° F
    PRESSURE
    RANGE
    VARIES ACCORD
    ING TO DIAMETRAL
    CLEARANCE
    Part NumberA
    Nom. ID
    B
    Nom. OD
    C
    Nom. Ht
    1/16″ C/S
    575-004ST
    575-005ST
    575-006ST
    575-007ST
    575-008ST
    575-009ST
    575-009T
    575-010ST
    575-010T
    575-011ST
    575-011T
    575-012ST
    575-013ST
    575-014ST
    575-015ST
    575-016ST
    575-017ST
    575-018ST
    575-018T
    575-019ST
    575-020ST
    575-020T
    575-021ST
    575-022ST
    575-022T
    575-023ST
    575-024ST
    575-025ST
    575-026ST
    575-026T
    575-027ST
    575-028ST
    575-029ST
    575-029T
    575-030ST
    575-031T
    575-032T
    575-033ST
    575-033T
    575-034T
    575-036T
    575-037T
    575-038ST
    575-038T
    575-039T
    575-041T
    575-044T
    575-045T
    5/64
    3/32
    1/8
    5/32
    3/16
    7/32
    7/32
    1/4
    1/4
    5/16
    5/16
    3/8
    7/16
    1/2
    9/16
    5/8
    11/16
    3/4
    3/4
    13/16
    7/8
    7/8
    15/16
    1
    1
    1-1/16
    1-1/8
    1-3/16
    1-1/4
    1-1/4
    1-5/16
    1-3/8
    1-1/2
    1-1/2
    1-5/8
    1-3/4
    1-7/8
    2
    2
    2-1/8
    2-3/8
    2-1/2
    2-5/8
    2-5/8
    2-3/4
    3
    3-3/4
    4
    13/64
    7/32
    1/4
    9/32
    5/16
    11/32
    11/32
    3/8
    3/8
    7/16
    7/16
    1/2
    9/16
    5/8
    11/16
    3/4
    13/16
    7/8
    7/8
    15/16
    1
    1
    1-1/16
    1-1/8
    1-1/8
    1-3/16
    1-1/4
    1-5/16
    1-3/8
    1-3/8
    1-7/16
    1-1/2
    1-5/8
    1-5/8
    1-3/4
    1-7/8
    2
    2-1/8
    2-1/8
    2-1/4
    2-1/2
    2-5/8
    2-3/4
    2-3/4
    2-7/8
    3-1/8
    3-7/8
    4-1/8
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    3/32″ C/S
    575-110ST
    575-111ST
    575-111T
    575-112ST
    575-112T
    575-112TS
    575-113ST
    575-114ST
    575-114T
    575-115ST
    575-116ST
    575-116T
    575-116TS
    575-117ST
    575-117T
    575-118ST
    575-118T
    575-118TS
    575-119ST
    575-119T
    575-120ST
    575-120T
    575-121ST
    575-122ST
    575-122T
    575-123ST
    575-124ST
    575-125ST
    575-126ST
    575-126T
    575-127ST
    575-128ST
    575-129ST
    575-130ST
    575-131ST
    575-131T
    575-132ST
    575-133ST
    575-133T
    575-134ST
    575-134TS
    575-135ST
    575-136ST
    575-137ST
    575-138ST
    575-139T
    575-139TS
    575-140T
    575-140TS
    575-141T
    575-143ST
    575-144ST
    575-146T
    575-148T
    575-149T
    575-152T
    575-153TS
    575-159T
    3/8
    7/16
    7/16
    1/2
    1/2
    1/2
    9/16
    5/8
    5/8
    11/16
    3/4
    3/4
    3/4
    13/16
    13/16
    7/8
    7/8
    7/8
    15/16
    15/16
    1
    1
    1-1/16
    1-1/8
    1-1/8
    1-3/16
    1-1/4
    1-5/16
    1-3/8
    1-3/8
    1-7/16
    1-1/2
    1-9/16
    1-5/8
    1-11/16
    1-11/16
    1-3/4
    1-13/16
    1-13/16
    1-7/8
    1-7/8
    1-15/16
    2
    2-1/16
    2-1/8
    2-3/16
    2-3/16
    2-1/4
    2-1/4
    2-5/16
    2-7/16
    2-1/2
    2-5/8
    2-3/4
    2-13/16
    3-1/4
    3-1/2
    5
    9/16
    5/8
    5/8
    11/16
    11/16
    11/16
    3/4
    13/16
    13/16
    7/8
    15/16
    15/16
    15/16
    1
    1
    1-1/16
    1-1/16
    1-1/16
    1-1/8
    1-1/8
    1-3/16
    1-3/16
    1-1/4
    1-5/16
    1-5/16
    1-3/8
    1-7/16
    1-1/2
    1-9/16
    1-9/16
    1-5/8
    1-11/16
    1-3/4
    1-13/16
    1-7/8
    1-7/8
    1-15/16
    2
    2
    2-1/16
    2-1/16
    2-1/8
    2-3/16
    2-1/4
    2-5/16
    2-3/8
    2-3/8
    2-7/16
    2-7/16
    2-1/2
    2-5/8
    2-11/16
    2-13/16
    2-15/16
    3
    3-7/16
    3-11/16
    5-3/16
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .55
    .05
    1/8″ C/S
    575-206ST
    575-210ST
    575-210T
    575-211ST
    575-212ST
    575-212T
    575-212TS
    575-212TW
    575-213ST
    575-214ST
    575-214T
    575-215ST
    575-216ST
    575-217ST
    575-218ST
    575-218T
    575-218TS
    575-219ST
    575-219T
    575-220ST
    575-220T
    575-220TS
    575-221ST
    575-221T
    575-222ST
    575-222TS
    575-223T
    575-223TS
    575-224ST
    575-224T
    575-224TS
    575-225ST
    575-226ST
    575-226TS
    575-227ST
    575-228ST
    575-229ST
    575-230ST
    575-230T
    575-231T
    575-232T
    575-232TS
    575-232TW
    575-233T
    575-234T
    575-235ST
    575-235T
    575-236T
    575-237T
    575-238T
    575-239ST
    575-239T
    575-240T
    575-240TS
    575-241ST
    575-242T
    575-243ST
    575-244T
    575-245ST
    575-245T
    575-246T
    575-246TS
    575-247T
    575-248T
    575-249ST
    575-249T
    575-250T
    575-252T
    575-253T
    575-254T
    575-256T
    575-258T
    575-260T
    575-261T
    575-262TS
    575-263ST
    1/2
    3/4
    3/4
    13/16
    7/8
    7/8
    7/8
    7/8
    15/16
    1
    1
    1-1/16
    1-1/8
    1-3/16
    1-1/4
    1-1/4
    1-1/4
    1-5/16
    1-5/16
    1-3/8
    1-3/8
    1-3/8
    1-7/16
    1-7/16
    1-1/2
    1-1/2
    1-5/8
    1-5/8
    1-3/4
    1-3/4
    1-3/4
    1-7/8
    2
    2
    2-1/8
    2-1/4
    2-3/8
    2-1/2
    2-1/2
    2-5/8
    2-3/4
    2-3/4
    2-3/4
    2-7/8
    3
    3-1/8
    3-1/8
    3-1/4
    3-3/8
    3-1/2
    3-5/8
    3-5/8
    3-3/4
    3-3/4
    3-7/8
    4
    4-1/8
    4-1/4
    4-3/8
    4-3/8
    4-1/2
    4-1/2
    4-5/8
    4-3/4
    4-7/8
    4-7/8
    5
    5-1/4
    5-3/8
    5-1/2
    5-3/4
    6
    6-1/2
    6-3/4
    7
    7-1/4
    3/4
    1
    1
    1-1/16
    1-1/8
    1-1/8
    1-1/8
    1-1/8
    1-3/16
    1-1/4
    1-1/4
    1-5/16
    1-3/8
    1-7/16
    1-1/2
    1-1/2
    1-1/2
    1-9/16
    1-9/16
    1-5/8
    1-5/8
    1-5/8
    1-11/16
    1-11/16
    1-3/4
    1-3/4
    1-7/8
    1-7/8
    2
    2
    2
    2-1/8
    2-1/4
    2-1/4
    2-3/8
    2-1/2
    2-5/8
    2-3/4
    2-3/4
    2-7/8
    3
    3
    3
    3-1/8
    3-1/4
    3-3/8
    3-3/8
    3-1/2
    3-5/8
    3-3/4
    3-7/8
    3-7/8
    4
    4
    4-1/8
    4-1/4
    4-3/8
    4-1/2
    4-5/8
    4-5/8
    4-3/4
    4-3/4
    4-7/8
    5
    5-1/8
    5-1/8
    5-1/4
    5-1/2
    5-5/8
    5-3/4
    6
    6-1/4
    6-3/4
    7
    7-1/4
    7-1/2
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .085
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .085
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .055
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    .05
    3/16″ C/S
    575-320T
    575-325ST
    575-325T
    575-326ST
    575-326T
    575-327ST
    575-328ST
    575-329ST
    575-330ST
    575-330T
    575-332TS
    575-333ST
    575-333T
    575-333TS
    575-334ST
    575-334TS
    575-335T
    575-336ST
    575-337TS
    575-338ST
    575-338T
    575-338TS
    575-340ST
    575-340TS
    575-341ST
    575-342ST
    575-344ST
    575-344TS
    575-345ST
    575-345TS
    575-346ST
    575-346TS
    575-348TS
    575-349T
    575-349TS
    575-350ST
    575-354ST
    575-356ST
    575-359T
    575-360T
    575-361T
    575-362ST
    575-363T
    575-363TS
    575-364T
    575-365T
    575-367ST
    575-369ST
    575-375T
    575-379T
    1-1/8
    1-1/2
    1-1/2
    1-5/8
    1-5/8
    1-3/4
    1-7/8
    2
    2-1/8
    2-1/8
    2-3/8
    2-1/2
    2-1/2
    2-1/2
    2-5/8
    2-5/8
    2-3/4
    2-7/8
    3
    3-1/8
    3-1/8
    3-1/8
    3-3/8
    3-3/8
    3-1/2
    3-5/8
    3-7/8
    3-7/8
    4
    4
    4-1/8
    4-1/8
    4-3/8
    4-1/2
    4-1/2
    4-5/8
    5-1/8
    5-3/8
    5-3/4
    5-7/8
    6
    6-1/4
    6-1/2
    6-1/2
    6-3/4
    7
    7-1/2
    8
    9-1/2
    11
    1-1/2
    1-7/8
    1-7/8
    2
    2
    2-1/8
    2-1/4
    2-3/8
    2-1/2
    2-1/2
    2-3/4
    2-7/8
    2-7/8
    2-7/8
    3
    3
    3-1/8
    3-1/4
    3-3/8
    3-1/2
    3-1/2
    3-1/2
    3-3/4
    3-3/4
    3-7/8
    4
    4-1/4
    4-1/4
    4-3/8
    4-3/8
    4-1/2
    4-1/2
    4-3/4
    4-7/8
    4-7/8
    5
    5-1/2
    5-3/4
    6-1/8
    6-1/4
    6-3/8
    6-5/8
    6-7/8
    6-7/8
    7-1/8
    7-3/8
    7-7/8
    8-3/8
    9-7/8
    11-3/8
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    .07
    1/4″ C/S
    575-413ST
    575-421T
    575-425ST
    575-426ST
    575-427ST
    575-430ST
    575-431T
    575-433ST
    575-436ST
    575-437T
    575-438T
    575-439T
    575-440ST
    575-443T
    575-445TS
    575-446T
    575-447T
    575-448T
    575-450T
    575-451T
    575-452T
    575-454T
    3
    4
    4-1/2
    4-5/8
    4-3/4
    5-1/8
    5-1/4
    5-1/2
    5-7/8
    6
    6-1/4
    6-1/2
    6-3/4
    7-1/2
    8
    8-1/2
    9
    9-1/2
    10-1/2
    11
    11-1/2
    12-1/2
    3-1/2
    4-1/2
    5
    5-1/8
    5-1/4
    5-5/8
    5-3/4
    6
    6-3/8
    6-1/2
    6-3/4
    7
    7-1/4
    8
    8-1/2
    9
    9-1/2
    10
    11
    11-1/2
    12
    13
    .108
    .108
    .108
    .108
    .108
    .108
    .108
    .108
    .108
    .108
    .108
    .108
    .108
    .108
    .108
    .108
    .108
    .108
    .108
    .108
    .108
    .108

    575 PTFE Back-Up Ring-Special Sizes

    Part NumberA
    Nom. ID
    B
    Nom. OD
    C
    Nom. Ht
    575-1-3/16X1-1/2T
    575-1.67X1.88X0.05T
    575-2.4X2.6X.06ST
    575-2.7X2.9X.06ST
    575-5X0.128X0.29BT
    575-5.5X6.12T
    575-6.12X7ST
    575-6.66X7.00X0.08T
    575-7X8T
    575-7.75X8.75X.125T
    575-9X10T
    575-13X14T
    1-3/16
    1.674
    2.457
    2.707
    5
    5-1/2
    6-1/8
    6.666
    7
    7-3/4
    9
    13
    1-1/2
    1.88
    2.687
    2.937
    5.59
    6-1/8
    7
    7
    8
    8-3/4
    10
    14
    1/16
    .055
    1/16
    1/16
    .128
    1/16
    1/8
    .08
    1/8
    1/8
    1/8
    9/64