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O-Rings

FSC 5331: O-Rings

Federal Supply Class (FSC) 5331 covers O-rings, the round-section elastomeric seals used to seal static and dynamic joints. The catalog includes O-rings built to AS568, MIL-SPEC, and industry standards.

O-rings seal connections in hydraulic, pneumatic, fuel, and fluid systems by compressing in a groove. They are among the most widely used sealing elements in machinery.

Common materials include nitrile (Buna-N), fluorocarbon (Viton), silicone, EPDM, and PTFE, selected for fluid compatibility and temperature range. Sizes follow standard dash-number series for repeatable replacement.

5331-22-269-2717 (81300-17-0672)

NIIN: 22-269-2717
In stock
NSN: 5331-22-269-2717
FSC Code: 5331
MPN: 81300170672

5331-22-269-2755 (81300-17-0850)

NIIN: 22-269-2755
In stock
NSN: 5331-22-269-2755
FSC Code: 5331
MPN: 81300170850

5331-00-812-1114 (K674254-15)

NIIN: 00-812-1114
In stock
NSN: 5331-00-812-1114
FSC Code: 5331
MPN: K67425415

5331-00-468-2635 (K671V9)

NIIN: 00-468-2635
In stock
NSN: 5331-00-468-2635
FSC Code: 5331
MPN: K671V9

5331-01-272-1370 (K674097-13)

NIIN: 01-272-1370
In stock
NSN: 5331-01-272-1370
FSC Code: 5331
MPN: K67409713

5331-01-232-2152 (K6347-0020)

NIIN: 01-232-2152
In stock
NSN: 5331-01-232-2152
FSC Code: 5331
MPN: K63470020

5331-01-314-4801 (K625405)

NIIN: 01-314-4801
In stock
NSN: 5331-01-314-4801
FSC Code: 5331
MPN: K625405

5331-00-139-6562 (K618730-13)

NIIN: 00-139-6562
In stock
NSN: 5331-00-139-6562
FSC Code: 5331
MPN: K61873013

5331-01-300-1210 (K623588)

NIIN: 01-300-1210
In stock
NSN: 5331-01-300-1210
FSC Code: 5331
MPN: K623588

5331-22-269-2752 (81200-12-3848)

NIIN: 22-269-2752
In stock
NSN: 5331-22-269-2752
FSC Code: 5331
MPN: 81200123848

5331-00-138-6287 (K618730-11)

NIIN: 00-138-6287
In stock
NSN: 5331-00-138-6287
FSC Code: 5331
MPN: K61873011

5331-22-269-2728 (81200-12-6330)

NIIN: 22-269-2728
In stock
NSN: 5331-22-269-2728
FSC Code: 5331
MPN: 81200126330

5331-22-269-2721 (81200-12-5084)

NIIN: 22-269-2721
In stock
NSN: 5331-22-269-2721
FSC Code: 5331
MPN: 81200125084

5331-01-232-2149 (K5785-0012)

NIIN: 01-232-2149
In stock
NSN: 5331-01-232-2149
FSC Code: 5331
MPN: K57850012

5331-01-232-2151 (K5800-0010)

NIIN: 01-232-2151
In stock
NSN: 5331-01-232-2151
FSC Code: 5331
MPN: K58000010

5331-01-232-2148 (K5719-0905)

NIIN: 01-232-2148
In stock
NSN: 5331-01-232-2148
FSC Code: 5331
MPN: K57190905

5331-01-232-2153 (K5719-0020)

NIIN: 01-232-2153
In stock
NSN: 5331-01-232-2153
FSC Code: 5331
MPN: K57190020

5331-01-232-2154 (K5800-0012)

NIIN: 01-232-2154
In stock
NSN: 5331-01-232-2154
FSC Code: 5331
MPN: K58000012

5331-01-480-9129 (8116-366Y)

NIIN: 01-480-9129
In stock
NSN: 5331-01-480-9129
FSC Code: 5331
MPN: 8116366Y

5331-01-311-0912 (K55971-6M-90)

NIIN: 01-311-0912
In stock
NSN: 5331-01-311-0912
FSC Code: 5331
MPN: K559716M90

5331-01-475-2327 (MR8115-366Y)

NIIN: 01-475-2327
In stock
NSN: 5331-01-475-2327
FSC Code: 5331
MPN: MR8115366Y

5331-01-246-3896 (K5304-0800)

NIIN: 01-246-3896
In stock
NSN: 5331-01-246-3896
FSC Code: 5331
MPN: K53040800

5331-01-157-0845 (K-500-2126)

NIIN: 01-157-0845
In stock
NSN: 5331-01-157-0845
FSC Code: 5331
MPN: K5002126

5331-01-381-4015 (81-11-150-32)

NIIN: 01-381-4015
In stock
NSN: 5331-01-381-4015
FSC Code: 5331
MPN: 811115032

5331-01-316-2342 (K41RB72011)

NIIN: 01-316-2342
In stock
NSN: 5331-01-316-2342
FSC Code: 5331
MPN: K41RB72011

5331-01-132-2061 (K41RB72013)

NIIN: 01-132-2061
In stock
NSN: 5331-01-132-2061
FSC Code: 5331
MPN: K41RB72013

5331-00-435-6990 (K41RB72017)

NIIN: 00-435-6990
In stock
NSN: 5331-00-435-6990
FSC Code: 5331
MPN: K41RB72017

5331-01-421-1541 (8110-366Y)

NIIN: 01-421-1541
In stock
NSN: 5331-01-421-1541
FSC Code: 5331
MPN: 8110366Y

5331-01-162-7784 (K3A-80625)

NIIN: 01-162-7784
In stock
NSN: 5331-01-162-7784
FSC Code: 5331
MPN: K3A80625

5331-01-162-7782 (K3A-80625-PIECE)

NIIN: 01-162-7782
In stock
NSN: 5331-01-162-7782
FSC Code: 5331
MPN: K3A80625PIECE

5331-01-320-3445 (K303571)

NIIN: 01-320-3445
In stock
NSN: 5331-01-320-3445
FSC Code: 5331
MPN: K303571

5331-01-338-6308 (K33191)

NIIN: 01-338-6308
In stock
NSN: 5331-01-338-6308
FSC Code: 5331
MPN: K33191

5331-01-025-6463 (K301244-12)

NIIN: 01-025-6463
In stock
NSN: 5331-01-025-6463
FSC Code: 5331
MPN: K30124412

5331-01-497-9141 (810901-028)

NIIN: 01-497-9141
In stock
NSN: 5331-01-497-9141
FSC Code: 5331
MPN: 810901028

5331-01-497-9165 (810901-1095)

NIIN: 01-497-9165
In stock
NSN: 5331-01-497-9165
FSC Code: 5331
MPN: 8109011095

5331-01-497-9132 (810901-017)

NIIN: 01-497-9132
In stock
NSN: 5331-01-497-9132
FSC Code: 5331
MPN: 810901017

5331-01-497-9137 (810901-019)

NIIN: 01-497-9137
In stock
NSN: 5331-01-497-9137
FSC Code: 5331
MPN: 810901019

5331-01-497-9144 (810901-106)

NIIN: 01-497-9144
In stock
NSN: 5331-01-497-9144
FSC Code: 5331
MPN: 810901106

5331-01-552-9134 (810901-245)

NIIN: 01-552-9134
In stock
NSN: 5331-01-552-9134
FSC Code: 5331
MPN: 810901245

5331-01-497-9150 (810901-903)

NIIN: 01-497-9150
In stock
NSN: 5331-01-497-9150
FSC Code: 5331
MPN: 810901903

5331-01-276-7352 (K288041)

NIIN: 01-276-7352
In stock
NSN: 5331-01-276-7352
FSC Code: 5331
MPN: K288041

5331-01-497-9117 (810901-011)

NIIN: 01-497-9117
In stock
NSN: 5331-01-497-9117
FSC Code: 5331
MPN: 810901011

5331-01-497-9125 (810901-014)

NIIN: 01-497-9125
In stock
NSN: 5331-01-497-9125
FSC Code: 5331
MPN: 810901014

5331-01-497-9134 (810901-018)

NIIN: 01-497-9134
In stock
NSN: 5331-01-497-9134
FSC Code: 5331
MPN: 810901018

5331-01-497-9151 (810901-904)

NIIN: 01-497-9151
In stock
NSN: 5331-01-497-9151
FSC Code: 5331
MPN: 810901904

5331-01-497-9147 (810901-128)

NIIN: 01-497-9147
In stock
NSN: 5331-01-497-9147
FSC Code: 5331
MPN: 810901128

5331-01-497-9116 (810901-010)

NIIN: 01-497-9116
In stock
NSN: 5331-01-497-9116
FSC Code: 5331
MPN: 810901010

5331-01-497-9108 (810901-008)

NIIN: 01-497-9108
In stock
NSN: 5331-01-497-9108
FSC Code: 5331
MPN: 810901008