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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.

5331-01-145-6896 (52560A250)

NIIN: 01-145-6896
In stock
NSN: 5331-01-145-6896
FSC Code: 5331
MPN: 52560A250

5331-01-131-9494 (52561A114)

NIIN: 01-131-9494
In stock
NSN: 5331-01-131-9494
FSC Code: 5331
MPN: 52561A114

5331-01-030-4926 (52-560-A073)

NIIN: 01-030-4926
In stock
NSN: 5331-01-030-4926
FSC Code: 5331
MPN: 52560A073

5331-01-151-8789 (5-256)

NIIN: 01-151-8789
In stock
NSN: 5331-01-151-8789
FSC Code: 5331
MPN: 5256

5331-01-291-7879 (5-256)

NIIN: 01-291-7879
In stock
NSN: 5331-01-291-7879
FSC Code: 5331
MPN: 5256

5331-01-451-5632 (196A588LFS)

NIIN: 01-451-5632
In stock
NSN: 5331-01-451-5632
FSC Code: 5331
MPN: 196A588LFS

5331-00-171-8117 (525-27)

NIIN: 00-171-8117
In stock
NSN: 5331-00-171-8117
FSC Code: 5331
MPN: 52527

5331-01-326-5784 (5-251N741-75)

NIIN: 01-326-5784
In stock
NSN: 5331-01-326-5784
FSC Code: 5331
MPN: 5251N74175

5331-00-150-4868 (5-252-77-545)

NIIN: 00-150-4868
In stock
NSN: 5331-00-150-4868
FSC Code: 5331
MPN: 525277545

5331-01-530-5611 (19-68117-214)

NIIN: 01-530-5611
In stock
NSN: 5331-01-530-5611
FSC Code: 5331
MPN: 1968117214

5331-01-530-5607 (19-68118-122)

NIIN: 01-530-5607
In stock
NSN: 5331-01-530-5607
FSC Code: 5331
MPN: 1968118122

5331-00-107-5331 (5-251N674-70)

NIIN: 00-107-5331
In stock
NSN: 5331-00-107-5331
FSC Code: 5331
MPN: 5251N67470

5331-01-436-5698 (19-68117-210)

NIIN: 01-436-5698
In stock
NSN: 5331-01-436-5698
FSC Code: 5331
MPN: 1968117210

5331-01-289-2642 (52507-01ITEM43)

NIIN: 01-289-2642
In stock
NSN: 5331-01-289-2642
FSC Code: 5331
MPN: 5250701ITEM43

5331-01-494-8086 (CGR1601-0125-7)

NIIN: 01-494-8086
In stock
NSN: 5331-01-494-8086
FSC Code: 5331
MPN: CGR160101257

5331-01-118-8807 (52500-172158)

NIIN: 01-118-8807
In stock
NSN: 5331-01-118-8807
FSC Code: 5331
MPN: 52500172158

5331-01-119-3467 (52500-172448)

NIIN: 01-119-3467
In stock
NSN: 5331-01-119-3467
FSC Code: 5331
MPN: 52500172448

5331-00-966-8692 (5245-8)

NIIN: 00-966-8692
In stock
NSN: 5331-00-966-8692
FSC Code: 5331
MPN: 52458

5331-00-966-8682 (5245-5)

NIIN: 00-966-8682
In stock
NSN: 5331-00-966-8682
FSC Code: 5331
MPN: 52455

5331-00-493-8042 (5245-12)

NIIN: 00-493-8042
In stock
NSN: 5331-00-493-8042
FSC Code: 5331
MPN: 524512

5331-00-618-0226 (5245-16)

NIIN: 00-618-0226
In stock
NSN: 5331-00-618-0226
FSC Code: 5331
MPN: 524516

5331-01-315-9277 (5-243N304-75)

NIIN: 01-315-9277
In stock
NSN: 5331-01-315-9277
FSC Code: 5331
MPN: 5243N30475

5331-01-353-3473 (KS-9261-2)

NIIN: 01-353-3473
In stock
NSN: 5331-01-353-3473
FSC Code: 5331
MPN: KS92612

5331-00-420-8232 (524105-127)

NIIN: 00-420-8232
In stock
NSN: 5331-00-420-8232
FSC Code: 5331
MPN: 524105127

5331-00-599-9432 (5-236PSI-30-5)

NIIN: 00-599-9432
In stock
NSN: 5331-00-599-9432
FSC Code: 5331
MPN: 5236PSI305

5331-01-062-4729 (5237-29)

NIIN: 01-062-4729
In stock
NSN: 5331-01-062-4729
FSC Code: 5331
MPN: 523729

5331-01-147-1263 (5-236)

NIIN: 01-147-1263
In stock
NSN: 5331-01-147-1263
FSC Code: 5331
MPN: 5236

5331-01-523-8900 (195-5830)

NIIN: 01-523-8900
In stock
NSN: 5331-01-523-8900
FSC Code: 5331
MPN: 1955830

5331-01-569-1321 (195-3443)

NIIN: 01-569-1321
In stock
NSN: 5331-01-569-1321
FSC Code: 5331
MPN: 1953443

5331-00-445-1793 (5232-51)

NIIN: 00-445-1793
In stock
NSN: 5331-00-445-1793
FSC Code: 5331
MPN: 523251

5331-01-112-4406 (5-230N674-70)

NIIN: 01-112-4406
In stock
NSN: 5331-01-112-4406
FSC Code: 5331
MPN: 5230N67470

5331-01-323-2720 (522C3020)

NIIN: 01-323-2720
In stock
NSN: 5331-01-323-2720
FSC Code: 5331
MPN: 522C3020

5331-01-557-8144 (194-7158)

NIIN: 01-557-8144
In stock
NSN: 5331-01-557-8144
FSC Code: 5331
MPN: 1947158

5331-01-097-8960 (5-223-V835-75)

NIIN: 01-097-8960
In stock
NSN: 5331-01-097-8960
FSC Code: 5331
MPN: 5223V83575

5331-01-280-6789 (5-223)

NIIN: 01-280-6789
In stock
NSN: 5331-01-280-6789
FSC Code: 5331
MPN: 5223

5331-01-249-6734 (5-22-2012-00-30F/G)

NIIN: 01-249-6734
In stock
NSN: 5331-01-249-6734
FSC Code: 5331
MPN: 52220120030FG

5331-01-137-6905 (521875-02)

NIIN: 01-137-6905
In stock
NSN: 5331-01-137-6905
FSC Code: 5331
MPN: 52187502

5331-00-445-1798 (5217-51)

NIIN: 00-445-1798
In stock
NSN: 5331-00-445-1798
FSC Code: 5331
MPN: 521751

5331-00-468-2589 (5-218)

NIIN: 00-468-2589
In stock
NSN: 5331-00-468-2589
FSC Code: 5331
MPN: 5218

5331-00-831-6508 (5-2163-6)

NIIN: 00-831-6508
In stock
NSN: 5331-00-831-6508
FSC Code: 5331
MPN: 521636

5331-00-831-6507 (5-2163-5)

NIIN: 00-831-6507
In stock
NSN: 5331-00-831-6507
FSC Code: 5331
MPN: 521635

5331-00-413-9742 (5216-2943)

NIIN: 00-413-9742
In stock
NSN: 5331-00-413-9742
FSC Code: 5331
MPN: 52162943

5331-01-203-2571 (5214-06)

NIIN: 01-203-2571
In stock
NSN: 5331-01-203-2571
FSC Code: 5331
MPN: 521406

5331-01-093-0739 (5-212C557-70)

NIIN: 01-093-0739
In stock
NSN: 5331-01-093-0739
FSC Code: 5331
MPN: 5212C55770

5331-00-199-7760 (5-212)

NIIN: 00-199-7760
In stock
NSN: 5331-00-199-7760
FSC Code: 5331
MPN: 5212

5331-01-101-6074 (5-211E603-70)

NIIN: 01-101-6074
In stock
NSN: 5331-01-101-6074
FSC Code: 5331
MPN: 5211E60370

5331-00-136-5673 (521-2280025PC43)

NIIN: 00-136-5673
In stock
NSN: 5331-00-136-5673
FSC Code: 5331
MPN: 5212280025PC43

5331-01-264-6281 (521-113)

NIIN: 01-264-6281
In stock
NSN: 5331-01-264-6281
FSC Code: 5331
MPN: 521113