MBT Back-Up Ring
Commonly used with metric o-rings, these back-up rings are made of virgin PTFE unless suffix specifies otherwise.
| SEAL INFORMATION | |
| MATERIAL | PTFE |
| TEMPERATURE RANGE | -100° TO +500° F |
| Part Number | A Nom. ID | B Nom. OD | C Nom. Ht |
| 1mm C/S | |||
| MBT-20X1X.85GM | 20 | 22 | 0.85 |
| 1.3mm C/S | |||
| MBT-55X3X1.3S | 55 | 61 | 3 |
| 1.5mm C/S | |||
| MBT-3X1.5X1.25 MBT-4X1.5X1.25 MBT-5X1.5X1.25 MBT-6X1.5X1.25 MBT-7X1.5X1.25 MBT-8X1.5X1.25 MBT-9X1.5X1.25 MBT-10X1.5X1.25 MBT-13X1.5X1 | 3 4 5 6 7 8 9 10 13 | 6 7 8 9 10 11 12 13 16 | 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1 |
| 2mm C/S | |||
| MBT-10X2X1.25 MBT-11X2X1.25 MBT-12X2X1.25 MBT-12.5X2X1.25 MBT-13X2X1.2 MBT-14X2X1.25 MBT-15X2X1.25 MBT-16X2X1.25 MBT-18X2X1.25 MBT-20X2X1.25 MBT-21X2X1.25 MBT-22X2X1.25 MBT-26X2X2.5SG MBT-28X2X1.5S MBT-47X2X1.25 MBT-53X2X1.25 | 10 11 12 12.5 13 14 15 16 18 20 21 22 26 28 47 53 | 14 15 16 16.5 17 18 19 20 22 24 25 26 30 32 51 57 | 1.25 1.25 1.25 1.25 1.2 1.25 1.25 1.25 1.25 1.25 1.25 1.25 2.5 1.5 1.25 1.25 |
| 2.1mm C/S | |||
| MBT-11.8X2.1X1 | 11.8 | 16 | 1 |
| 2.4mm C/S | |||
| MBT-127.7X2.4X1.25G | 127.7 | 132.5 | 1.25 |
| 2.5mm C/S | |||
| MBT-20X2.5X1.25 MBT-25X2.5X1.25 MBT-30X2.5X1.25 MBT-32X2.5X1.5 MBT-35X2.5X1.25 MBT-40X2.5X1.25 MBT-45X2.5X1.25 MBT-46X2.5X1.25 MBT-50X2.5X1.25 MBT-50X2.5X1.25ST MBT-55X2.5X1.25 MBT-56X2.5X1.25 MBT-57X2.5X1.5 MBT-60X2.5X1.25 MBT-62X2.5X1.25 MBT-65X2.5X1.25 MBT-70X2.5X1.25 MBT-75X2.5X1.25 MBT-77X2.5X1.25 MBT-80X2.5X1.25 MBT-81X2.5X1.5 MBT-85X2.5X1.25 MBT-88X2.5X1.3 MBT-90X2.5X1.25 MBT-90X2.5X1.5 MBT-95X2.5X1.25 MBT-99.8X2.5X1.5 MBT-100X2.5X1.25 MBT-105X2.5X1.25 MBT-109.7X2.5X1.5 MBT-110X2.5X1.25 MBT-115X2.5X1.25 MBT-120X2.5X1.25 MBT-125X2.5X1.25 MBT-130X2.5X1.25 MBT-135X2.5X1.25 MBT-140X2.5X1.25 MBT-145X2.5X1.25 MBT-155X2.5X1.5 | 20 25 30 32 35 40 45 46 50 50 55 56 57 60 62 65 70 75 77 80 81 85 88 90 90 95 99.8 100 105 109.7 110 115 120 125 130 135 140 145 155 | 25 30 35 37 40 45 50 51 55 55 60 61 62 65 67 70 75 80 82 85 86 90 93 95 95 100 104.8 105 110 114.7 115 120 125 130 135 140 145 150 160 | 1.25 1.25 1.25 1.5 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.5 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.5 1.25 1.3 1.25 1.5 1.25 1.5 1.25 1.25 1.5 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.5 |
| 2.6mm C/S | |||
| MBT-73.7X2.6X1.5 MBT-74.4X2.6X1.8 MBT-104X2.6X1.5 | 73.7 74.4 104 | 78.9 79.6 109.2 | 1.5 1.8 1.5 |
| 2.75mm C/S | |||
| MBT-35X2.75X1.5S | 35 | 40.5 | 1.5 |
| 3mm C/S | |||
| MBT-22X3X1.25 MBT-22.4X3X1.25 MBT-24X3X1.25 MBT-25X3X1.25 MBT-26X3X1.25 MBT-28X3X1.25 MBT-29X3X1.25 MBT-29.5X3X1.25 MBT-30X3X1.25 MBT-30X3X2.3 MBT-31X3X1.25 MBT-32X3X1.25 MBT-34X3X1.25 MBT-35X3X1.25 MBT-35.5X3X1.25 MBT-36X3X1.25 MBT-38X3X1.25 MBT-39X3X1.25 MBT-40X3X1.25 MBT-41X3X1.25 MBT-42X3X1.25 MBT-44X3X1.25 MBT-45X3X1.25 MBT-46X3X1.25 MBT-48X3X1.25 MBT-49X3X1.25 MBT-50X3X1.25 | 22 22.4 24 25 26 28 29 29.5 30 30 31 32 34 35 35.5 36 38 39 40 41 42 44 45 46 48 49 50 | 28 28.4 30 31 32 34 35 35.5 36 36 37 38 40 41 41.5 42 44 45 46 47 48 50 51 52 54 55 56 | 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 2.3 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 |
| 3.1mm C/S | |||
| MBT-94.8X3.1X1.7 MBT-104.8X3.1X1.7 | 94.8 104.8 | 101 111 | 1.7 1.7 |
| 3.5mm C/S | |||
| MBT-62X3.5X1.1 MBT-82X3.5X1.5G MBT-90X3.5X1.5 | 62 82 90 | 69 89 97 | 1.1 1.5 1.5 |
| 4mm C/S | |||
| MBT-25X4X1.5 MBT-123X4X1.7 MBT-150X4X1.6 | 25 123 150 | 33 131 158 | 1.5 1.7 1.6 |
| 4.5mm C/S | |||
| MBT-170X4.5X1.9 MBT-190X4.5X1.9 | 170 190 | 179 199 | 1.9 1.9 |
| 5mm C/S | |||
| MBT-35.25X5X3 MBT-50X5X1.9 MBT-52X5X1.9 MBT-53X5X1.9 MBT-55X5X1.9 MBT-55X5X3B MBT-55.93X5X1.5 MBT-56X5X1.9 MBT-58X5X1.9 MBT-59.95X5X1.55 MBT-60X5X1.9 MBT-62X5X1.9 MBT-63X5X1.9 MBT-65X5X1.9 MBT-67X5X1.9 MBT-70X5X1.9 MBT-70X5X1.9S MBT-70X5X1.9SB MBT-70X5X3SGM MBT-71X5X1.9 MBT-74X5X1.9 MBT-75X5X1.9 MBT-80X5X1.9 MBT-80X5X1.9-B6 MBT-80X5X3SCG MBT-85X5X1.9 MBT-90X5X1.9 MBT-93X5X1.7 MBT-95X5X1.9 MBT-100X5X1.9 MBT-105X5X1.9 MBT-110X5X1.9 MBT-112X5X1.9 MBT-115X5X1.9 MBT-120X5X1.9 MBT-125X5X1.9 MBT-130X5X1.9 MBT-132X5X1.9 MBT-135X5X1.9 MBT-140X5X1.9 MBT-145X5X1.9 MBT-150X5X1.9 MBT-155X5X1.9 MBT-160X5X1.9 MBT-162X5X1.9 MBT-165X5X1.9 MBT-170X5X1.9 MBT-180X5X1.9 MBT-180X5X2.5 MBT-185X5X1.9 MBT-190X5X1.9 MBT-195X5X1.9 MBT-200X5X1.9 MBT-210X5X1.9 MBT-214X5X1.9 MBT-215X5X1.9 MBT-220X5X1.9 MBT-230X5X1.9 MBT-240X5X1.9 MBT-250X5X1.9 MBT-260X5X1.9 MBT-270X5X1.9 MBT-275X5X1.9 MBT-280X5X1.9 MBT-290X5X1.9 MBT-300X5X1.9 | 35.25 50 52 53 55 55 56 56 58 60 60 62 63 65 67 70 70 70 70 71 74 75 80 80 80 85 90 93 95 100 105 110 112 115 120 125 130 132 135 140 145 150 155 160 162 165 170 180 180 185 190 195 200 210 214 215 220 230 240 250 260 270 275 280 290 300 | 45.25 60 62 63 65 65 66 66 68 70 70 72 73 75 77 80 80 80 80 81 84 85 90 90 90 95 100 103 105 110 115 120 122 125 130 135 140 142 145 150 155 160 165 170 172 175 180 190 190 195 200 205 210 220 224 225 230 240 250 260 270 280 285 290 300 310 | 3 1.9 1.9 1.9 1.9 3 1.5 1.9 1.9 1.5 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 3 1.9 1.9 1.9 1.9 1.9 3 1.9 1.9 1.7 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 2.5 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 |
| 6mm C/S | |||
| MBT-325X6X3.5 | 325 | 337 | 3.5 |
| 7.4mm C/S | |||
| MBT-100X7.5X2.5SB | 100 | 114.8 | 2.5 |
| 7.5mm C/S | |||
| MBT-95X7.5X3GM MBT-112X7.5X3SCG MBT-150X7.5X2.75 MBT-155X7.5X2.75 MBT-160X7.5X2.75 MBT-165X7.5X2.75 MBT-170X7.5X2.75 MBT-175X7.5X2.75 MBT-180X7.5X2.75 MBT-185X7.5X2.75 MBT-190X7.5X2.75 MBT-195X7.5X2.75 MBT-200X7.5X2.75 MBT-205X7.5X2.75 MBT-209X7.5X2.75 MBT-210X7.5X2.5 MBT-210X7.5X2.75 MBT-235X7.5X2.75 MBT-240X7.5X2.75 MBT-245X7.5X2.75 MBT-255X7.5X2.75 MBT-265X7.5X2.75 MBT-275X7.5X2.75 MBT-280X7.5X2.75 MBT-285X7.5X2.75 MBT-300X7.5X2.75 | 95 112 150 155 160 165 170 175 180 185 190 195 200 205 209 210 210 235 240 245 255 265 275 280 285 300 | 110 127 165 170 175 180 185 190 195 200 205 210 215 220 224 225 225 250 255 260 270 280 290 295 300 315 | 3 3 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.5 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.75 2.75 |
| 7.88mm C/S | |||
| MBT-54X7.88X3 | 54.04 | 69.8 | 3 |
| 12.5mm C/S | |||
| MBT-170X12.5X4SB MBT-180X12.5X4SB | 170 180 | 195 205 | 4 4 |