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HERCULES 573 BACK-UP RING

    573 Back-Up Ring

    Molded of 55D Durometer Hytrel, these back-up rings provide excellent extrusion resistance and tolerance to fluids such as phosphate esters, hydraulic oil and water. 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
    MATERIAL55D HYTREL
    TEMPERATURE
    RANGE    		-65° TO +275° F
    PRESSURE
    RANGE    		VARIES ACCORD
    ING TO DIAMETRAL
    CLEARANCE
    Part NumberA
    Nom. ID    		B
    Nom. OD    		C
    Nom. Ht
    1/16″ C/S
    573-006
    573-009
    573-010
    573-011
    573-012
    573-014-03
    573-014
    573-015
    573-016
    573-016.5
    573-017
    573-018
    573-019
    573-020
    573-021
    573-022
    573-023
    573-024
    573-025
    573-026
    573-027
    573-028
    573-029
    573-030
    573-031
    573-032
    573-033
    573-034
    573-035
    573-036
    573-037
    573-038
    573-039
    573-040
    573-041
    573-042
    573-043
    573-044
    573-045
    573-048
    573-049
    573-050    		1/8
    7/32
    1/4
    5/16
    3/8
    1/2
    1/2
    9/16
    5/8
    21/32
    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
    4-3/4
    5
    5-1/4    		1/4
    11/32
    3/8
    7/16
    1/2
    5/8
    5/8
    11/16
    3/4
    25/32
    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
    4-7/8
    5-1/8
    5-3/8    		.05
    .05
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    .03
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    .05
    3/32″ C/S
    573-110
    573-111
    573-112
    573-113
    573-114
    573-115
    573-116
    573-117
    573-118
    573-119
    573-120
    573-122
    573-123
    573-124
    573-125
    573-126
    573-127
    573-128
    573-129
    573-130
    573-131
    573-132
    573-133
    573-134
    573-135
    573-136
    573-137
    573-138
    573-139
    573-140
    573-141
    573-142
    573-143
    573-144
    573-145
    573-146
    573-147
    573-148
    573-149
    573-150
    573-151
    573-152
    573-153
    573-154
    573-155
    573-156
    573-158
    573-159
    573-160
    573-161
    573-162
    573-163    		3/8
    7/16
    1/2
    9/16
    5/8
    11/16
    3/4
    13/16
    7/8
    15/16
    1
    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
    4-3/4
    5
    5-1/4
    5-1/2
    5-3/4
    6    		9/16
    5/8
    11/16
    3/4
    13/16
    7/8
    15/16
    1
    1-1/16
    1-1/8
    1-3/16
    1-5/16
    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
    4-15/16
    5-3/16
    5-7/16
    5-11/16
    5-15/16
    6-3/16    		.05
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    .05
    1/8″ C/S
    573-206
    573-207
    573-208
    573-209
    573-210
    573-211
    573-212
    573-213
    573-214
    573-215
    573-216
    573-217
    573-218
    573-219
    573-220
    573-221
    573-222
    573-223
    573-224
    573-225
    573-226
    573-227
    573-228
    573-229
    573-230
    573-231
    573-232
    573-233
    573-234
    573-235
    573-236
    573-237
    573-238
    573-239
    573-240
    573-241
    573-242
    573-243
    573-244
    573-245
    573-246
    573-247
    573-248
    573-249
    573-250
    573-251
    573-252
    573-253
    573-254
    573-255
    573-256
    573-257
    573-258
    573-259
    573-260
    573-261
    573-262
    573-263
    573-264
    573-265
    573-266
    573-267
    573-268
    573-269
    573-272
    573-273
    573-275
    573-276
    573-278    		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
    9-1/2
    9-3/4
    10-1/2
    11
    12    		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
    9-3/4
    10
    10-3/4
    11-1/4
    12-1/4    		.05
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    3/16″ C/S
    573-312
    573-314
    573-316
    573-318
    573-319
    573-320
    573-322
    573-323
    573-324
    573-325
    573-326
    573-327
    573-328
    573-329
    573-330
    573-331
    573-332
    573-333
    573-334
    573-335
    573-336
    573-337
    573-338
    573-339
    573-340
    573-341
    573-342
    573-343
    573-344
    573-345
    573-346
    573-347
    573-348
    573-350
    573-351
    573-352
    573-353
    573-354
    573-355
    573-356
    573-357
    573-358
    573-359
    573-360
    573-361
    573-362
    573-363
    573-364
    573-366
    573-367
    573-368
    573-370
    573-372
    573-375
    573-376    		5/8
    3/4
    7/8
    1
    1-1/16
    1-1/8
    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
    4-5/8
    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
    7-1/4
    7-1/2
    7-3/4
    8-1/4
    8-3/4
    9-1/2
    9-3/4    		1
    1-1/8
    1-1/4
    1-3/8
    1-7/16
    1-1/2
    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
    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
    7-5/8
    7-7/8
    8-1/8
    8-5/8
    9-1/8
    9-7/8
    10-1/8    		.07
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    1/4″ C/S
    573-425
    573-426
    573-427
    573-428
    573-429
    573-430
    573-431
    573-432
    573-433
    573-434
    573-435
    573-436
    573-437
    573-438
    573-439
    573-440
    573-441
    573-442
    573-443
    573-444
    573-445
    573-446
    573-447
    573-448
    573-450
    573-451
    573-452
    573-453
    573-454
    573-455
    573-456    		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
    10-1/2
    11
    11-1/2
    12
    12-1/2
    13
    13-1/2    		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
    11
    11-1/2
    12
    12-1/2
    13
    13-1/2
    14    		.105
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