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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.

5331-01-133-4881 (2-256E515-80)

NIIN: 01-133-4881
In stock
NSN: 5331-01-133-4881
FSC Code: 5331
MPN: 2256E51580

5331-12-155-8027 (OR60X2-72NBR/872)

NIIN: 12-155-8027
In stock
NSN: 5331-12-155-8027
FSC Code: 5331
MPN: OR60X272NBR872

5331-01-073-3691 (2-256C147-70)

NIIN: 01-073-3691
In stock
NSN: 5331-01-073-3691
FSC Code: 5331
MPN: 2256C14770

5331-01-038-3987 (2-256N103-70)

NIIN: 01-038-3987
In stock
NSN: 5331-01-038-3987
FSC Code: 5331
MPN: 2256N10370

5331-01-006-2030 (2-256N219-7)

NIIN: 01-006-2030
In stock
NSN: 5331-01-006-2030
FSC Code: 5331
MPN: 2256N2197

5331-12-156-8861 (OR47X2-72NBR/872)

NIIN: 12-156-8861
In stock
NSN: 5331-12-156-8861
FSC Code: 5331
MPN: OR47X272NBR872

5331-12-178-9491 (OR110X3-83FKM/592)

NIIN: 12-178-9491
In stock
NSN: 5331-12-178-9491
FSC Code: 5331
MPN: OR110X383FKM592

5331-01-560-1609 (POS 9 001090POS9)

NIIN: 01-560-1609
In stock
NSN: 5331-01-560-1609
FSC Code: 5331
MPN: POS9001090POS9

5331-00-756-8795 (2-256N951-75)

NIIN: 00-756-8795
In stock
NSN: 5331-00-756-8795
FSC Code: 5331
MPN: 2256N95175

5331-12-179-7458 (OR40X3-80FPM/610)

NIIN: 12-179-7458
In stock
NSN: 5331-12-179-7458
FSC Code: 5331
MPN: OR40X380FPM610

5331-12-179-7459 (000.963.00.38)

NIIN: 12-179-7459
In stock
NSN: 5331-12-179-7459
FSC Code: 5331
MPN: 0009630038

5331-01-168-5091 (2-256V709-90)

NIIN: 01-168-5091
In stock
NSN: 5331-01-168-5091
FSC Code: 5331
MPN: 2256V70990

5331-01-387-7338 (412-5110-0000)

NIIN: 01-387-7338
In stock
NSN: 5331-01-387-7338
FSC Code: 5331
MPN: 41251100000

5331-01-400-3753 (000.963.01.07)

NIIN: 01-400-3753
In stock
NSN: 5331-01-400-3753
FSC Code: 5331
MPN: 0009630107

5331-12-179-7460 (000.963.01.07)

NIIN: 12-179-7460
In stock
NSN: 5331-12-179-7460
FSC Code: 5331
MPN: 0009630107

5331-12-347-0904 (000.963.10.65)

NIIN: 12-347-0904
In stock
NSN: 5331-12-347-0904
FSC Code: 5331
MPN: 0009631065

5331-01-028-0818 (2-257)

NIIN: 01-028-0818
In stock
NSN: 5331-01-028-0818
FSC Code: 5331
MPN: 2257

5331-01-423-2400 (000.963.00.38)

NIIN: 01-423-2400
In stock
NSN: 5331-01-423-2400
FSC Code: 5331
MPN: 0009630038

5331-12-158-1355 (0R135X2-5-70NBR769)

NIIN: 12-158-1355
In stock
NSN: 5331-12-158-1355
FSC Code: 5331
MPN: 0R135X2570NBR769

5331-01-400-3752 (000.963.09.10)

NIIN: 01-400-3752
In stock
NSN: 5331-01-400-3752
FSC Code: 5331
MPN: 0009630910

5331-01-522-2563 (000.963.13.34)

NIIN: 01-522-2563
In stock
NSN: 5331-01-522-2563
FSC Code: 5331
MPN: 0009631334

5331-12-322-7664 (000.963.02.01)

NIIN: 12-322-7664
In stock
NSN: 5331-12-322-7664
FSC Code: 5331
MPN: 0009630201

5331-01-522-2675 (000.963.13.21)

NIIN: 01-522-2675
In stock
NSN: 5331-01-522-2675
FSC Code: 5331
MPN: 0009631321

5331-01-522-2673 (000.963.20.05)

NIIN: 01-522-2673
In stock
NSN: 5331-01-522-2673
FSC Code: 5331
MPN: 0009632005

5331-01-522-2562 (000.963.13.23)

NIIN: 01-522-2562
In stock
NSN: 5331-01-522-2562
FSC Code: 5331
MPN: 0009631323

5331-12-343-2966 (000.963.22.22)

NIIN: 12-343-2966
In stock
NSN: 5331-12-343-2966
FSC Code: 5331
MPN: 0009632222

5331-12-141-5101 (23176-209210.45.0)

NIIN: 12-141-5101
In stock
NSN: 5331-12-141-5101
FSC Code: 5331
MPN: 23176209210450

5331-12-306-5529 (000.963.09.10)

NIIN: 12-306-5529
In stock
NSN: 5331-12-306-5529
FSC Code: 5331
MPN: 0009630910

5331-12-154-4148 (5800583-094810.040)

NIIN: 12-154-4148
In stock
NSN: 5331-12-154-4148
FSC Code: 5331
MPN: 5800583094810040

5331-01-522-2677 (000.963.12.47)

NIIN: 01-522-2677
In stock
NSN: 5331-01-522-2677
FSC Code: 5331
MPN: 0009631247

5331-12-152-1764 (D24800R58X3-70NBR872)

NIIN: 12-152-1764
In stock
NSN: 5331-12-152-1764
FSC Code: 5331
MPN: D24800R58X370NBR872

5331-01-400-3749 (000.963.23.29)

NIIN: 01-400-3749
In stock
NSN: 5331-01-400-3749
FSC Code: 5331
MPN: 0009632329

5331-12-136-2619 (23176-069930.16.0)

NIIN: 12-136-2619
In stock
NSN: 5331-12-136-2619
FSC Code: 5331
MPN: 23176069930160

5331-12-153-5362 (42484290EY5052-28)

NIIN: 12-153-5362
In stock
NSN: 5331-12-153-5362
FSC Code: 5331
MPN: 42484290EY505228

5331-12-132-7549 (OR50X2-72NBR/872)

NIIN: 12-132-7549
In stock
NSN: 5331-12-132-7549
FSC Code: 5331
MPN: OR50X272NBR872

5331-01-400-3750 (000.963.22.16)

NIIN: 01-400-3750
In stock
NSN: 5331-01-400-3750
FSC Code: 5331
MPN: 0009632216

5331-00-812-1373 (2-258)

NIIN: 00-812-1373
In stock
NSN: 5331-00-812-1373
FSC Code: 5331
MPN: 2258

5331-00-835-8975 (2-258)

NIIN: 00-835-8975
In stock
NSN: 5331-00-835-8975
FSC Code: 5331
MPN: 2258

5331-00-167-5141 (2-258)

NIIN: 00-167-5141
In stock
NSN: 5331-00-167-5141
FSC Code: 5331
MPN: 2258

5331-01-265-6366 (2-257N219-70)

NIIN: 01-265-6366
In stock
NSN: 5331-01-265-6366
FSC Code: 5331
MPN: 2257N21970

5331-01-094-0375 (22585-18)

NIIN: 01-094-0375
In stock
NSN: 5331-01-094-0375
FSC Code: 5331
MPN: 2258518

5331-01-094-0374 (22585-20)

NIIN: 01-094-0374
In stock
NSN: 5331-01-094-0374
FSC Code: 5331
MPN: 2258520

5331-00-928-0487 (2-258)

NIIN: 00-928-0487
In stock
NSN: 5331-00-928-0487
FSC Code: 5331
MPN: 2258

5331-01-275-7801 (2-258E540-80)

NIIN: 01-275-7801
In stock
NSN: 5331-01-275-7801
FSC Code: 5331
MPN: 2258E54080

5331-00-472-2636 (2-258N674-70)

NIIN: 00-472-2636
In stock
NSN: 5331-00-472-2636
FSC Code: 5331
MPN: 2258N67470

5331-01-174-2675 (2-258N756-75)

NIIN: 01-174-2675
In stock
NSN: 5331-01-174-2675
FSC Code: 5331
MPN: 2258N75675

5331-00-892-2556 (2-258V747-75)

NIIN: 00-892-2556
In stock
NSN: 5331-00-892-2556
FSC Code: 5331
MPN: 2258V74775

5331-01-063-8978 (2-259)

NIIN: 01-063-8978
In stock
NSN: 5331-01-063-8978
FSC Code: 5331
MPN: 2259