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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.

5331-01-367-1661 (PVWH-34-LSAY-CNNN-380)

NIIN: 01-367-1661
In stock
NSN: 5331-01-367-1661
FSC Code: 5331
MPN: PVWH34LSAYCNNN380

5331-01-367-2352 (PVWH-34-LSAY-CNNN-355)

NIIN: 01-367-2352
In stock
NSN: 5331-01-367-2352
FSC Code: 5331
MPN: PVWH34LSAYCNNN355

5331-01-367-2355 (PVWH-34-LSAY-CF-393)

NIIN: 01-367-2355
In stock
NSN: 5331-01-367-2355
FSC Code: 5331
MPN: PVWH34LSAYCF393

5331-01-546-8845 (BU00218)

NIIN: 01-546-8845
In stock
NSN: 5331-01-546-8845
FSC Code: 5331
MPN: BU00218

5331-01-546-8850 (BU00220)

NIIN: 01-546-8850
In stock
NSN: 5331-01-546-8850
FSC Code: 5331
MPN: BU00220

5331-00-854-1495 (RC7168)

NIIN: 00-854-1495
In stock
NSN: 5331-00-854-1495
FSC Code: 5331
MPN: RC7168

5331-14-383-0794 (BT82-4)

NIIN: 14-383-0794
In stock
NSN: 5331-14-383-0794
FSC Code: 5331
MPN: BT824

5331-14-383-0793 (BT8-17)

NIIN: 14-383-0793
In stock
NSN: 5331-14-383-0793
FSC Code: 5331
MPN: BT817

5331-01-217-6999 (RC-4204-H)

NIIN: 01-217-6999
In stock
NSN: 5331-01-217-6999
FSC Code: 5331
MPN: RC4204H

5331-14-383-0792 (BT63-4)

NIIN: 14-383-0792
In stock
NSN: 5331-14-383-0792
FSC Code: 5331
MPN: BT634

5331-14-216-2049 (DW1213)

NIIN: 14-216-2049
In stock
NSN: 5331-14-216-2049
FSC Code: 5331
MPN: DW1213

5331-14-308-0030 (BT53-1)

NIIN: 14-308-0030
In stock
NSN: 5331-14-308-0030
FSC Code: 5331
MPN: BT531

5331-01-218-9477 (RC-4293-H)

NIIN: 01-218-9477
In stock
NSN: 5331-01-218-9477
FSC Code: 5331
MPN: RC4293H

5331-14-279-6112 (BT69-1)

NIIN: 14-279-6112
In stock
NSN: 5331-14-279-6112
FSC Code: 5331
MPN: BT691

5331-14-383-0791 (BT4-7)

NIIN: 14-383-0791
In stock
NSN: 5331-14-383-0791
FSC Code: 5331
MPN: BT47

5331-14-296-2809 (BT37-3)

NIIN: 14-296-2809
In stock
NSN: 5331-14-296-2809
FSC Code: 5331
MPN: BT373

5331-14-383-0790 (BT24-15)

NIIN: 14-383-0790
In stock
NSN: 5331-14-383-0790
FSC Code: 5331
MPN: BT2415

5331-14-264-0070 (BT21-3)

NIIN: 14-264-0070
In stock
NSN: 5331-14-264-0070
FSC Code: 5331
MPN: BT213

5331-14-535-9492 (BT10-14)

NIIN: 14-535-9492
In stock
NSN: 5331-14-535-9492
FSC Code: 5331
MPN: BT1014

5331-14-272-9487 (BT18-1)

NIIN: 14-272-9487
In stock
NSN: 5331-14-272-9487
FSC Code: 5331
MPN: BT181

5331-14-281-2810 (BT17-2)

NIIN: 14-281-2810
In stock
NSN: 5331-14-281-2810
FSC Code: 5331
MPN: BT172

5331-14-281-2809 (BT15-1)

NIIN: 14-281-2809
In stock
NSN: 5331-14-281-2809
FSC Code: 5331
MPN: BT151

5331-14-383-0788 (BT10-13)

NIIN: 14-383-0788
In stock
NSN: 5331-14-383-0788
FSC Code: 5331
MPN: BT1013

5331-14-383-0789 (BT15-14)

NIIN: 14-383-0789
In stock
NSN: 5331-14-383-0789
FSC Code: 5331
MPN: BT1514

5331-99-926-3525 (MBEU146640)

NIIN: 99-926-3525
In stock
NSN: 5331-99-926-3525
FSC Code: 5331
MPN: MBEU146640

5331-99-131-3267 (MBEU61514-1)

NIIN: 99-131-3267
In stock
NSN: 5331-99-131-3267
FSC Code: 5331
MPN: MBEU615141

5331-01-377-5368 (BSG-3328-316-ME-ST-XX-(*))

In stock

5331-01-210-1528 (RB-730)

NIIN: 01-210-1528
In stock
NSN: 5331-01-210-1528
FSC Code: 5331
MPN: RB730

5331-99-789-0739 (BS4518-0246-24)

NIIN: 99-789-0739
In stock
NSN: 5331-99-789-0739
FSC Code: 5331
MPN: BS4518024624

5331-99-327-4221 (BS4518-0245-30FPM75)

NIIN: 99-327-4221
In stock
NSN: 5331-99-327-4221
FSC Code: 5331
MPN: BS4518024530FPM75

5331-99-723-5120 (BS4518-0295-30)

NIIN: 99-723-5120
In stock
NSN: 5331-99-723-5120
FSC Code: 5331
MPN: BS4518029530

5331-99-973-4488 (BS4518-0395-30)

NIIN: 99-973-4488
In stock
NSN: 5331-99-973-4488
FSC Code: 5331
MPN: BS4518039530

5331-99-310-9289 (BS4518-0151-16)

NIIN: 99-310-9289
In stock
NSN: 5331-99-310-9289
FSC Code: 5331
MPN: BS4518015116

5331-99-352-5334 (BS4518-0476-24FPM75)

NIIN: 99-352-5334
In stock
NSN: 5331-99-352-5334
FSC Code: 5331
MPN: BS4518047624FPM75

5331-99-826-7101 (RM0351-16P5)

NIIN: 99-826-7101
In stock
NSN: 5331-99-826-7101
FSC Code: 5331
MPN: RM035116P5

5331-99-133-5083 (BS1806-136)

NIIN: 99-133-5083
In stock
NSN: 5331-99-133-5083
FSC Code: 5331
MPN: BS1806136

5331-99-168-9909 (BS1806-446)

NIIN: 99-168-9909
In stock
NSN: 5331-99-168-9909
FSC Code: 5331
MPN: BS1806446

5331-99-608-9640 (FRS40103A037)

NIIN: 99-608-9640
In stock
NSN: 5331-99-608-9640
FSC Code: 5331
MPN: FRS40103A037

5331-01-353-1775 (BS1806-111)

NIIN: 01-353-1775
In stock
NSN: 5331-01-353-1775
FSC Code: 5331
MPN: BS1806111

5331-99-606-6818 (BS1806-123)

NIIN: 99-606-6818
In stock
NSN: 5331-99-606-6818
FSC Code: 5331
MPN: BS1806123

5331-99-221-6432 (FRS40103A012)

NIIN: 99-221-6432
In stock
NSN: 5331-99-221-6432
FSC Code: 5331
MPN: FRS40103A012

5331-99-739-9347 (BS1806-247)

NIIN: 99-739-9347
In stock
NSN: 5331-99-739-9347
FSC Code: 5331
MPN: BS1806247

5331-99-663-2953 (BS1806-447A)

NIIN: 99-663-2953
In stock
NSN: 5331-99-663-2953
FSC Code: 5331
MPN: BS1806447A

5331-99-728-9844 (BS1806-030)

NIIN: 99-728-9844
In stock
NSN: 5331-99-728-9844
FSC Code: 5331
MPN: BS1806030

5331-99-555-0290 (MBEU161909)

NIIN: 99-555-0290
In stock
NSN: 5331-99-555-0290
FSC Code: 5331
MPN: MBEU161909

5331-01-184-7534 (RB25112)

NIIN: 01-184-7534
In stock
NSN: 5331-01-184-7534
FSC Code: 5331
MPN: RB25112

5331-01-414-7166 (BRPK00337)

NIIN: 01-414-7166
In stock
NSN: 5331-01-414-7166
FSC Code: 5331
MPN: BRPK00337

5331-01-357-8892 (BRPK00054)

NIIN: 01-357-8892
In stock
NSN: 5331-01-357-8892
FSC Code: 5331
MPN: BRPK00054