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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.

5331-01-485-0023 (PRP568-341-3110-70)

NIIN: 01-485-0023
In stock
NSN: 5331-01-485-0023
FSC Code: 5331
MPN: PRP568341311070

5331-01-485-0033 (PRP568-225-3110-70)

NIIN: 01-485-0033
In stock
NSN: 5331-01-485-0033
FSC Code: 5331
MPN: PRP568225311070

5331-01-531-7181 (PRP568-336)

NIIN: 01-531-7181
In stock
NSN: 5331-01-531-7181
FSC Code: 5331
MPN: PRP568336

5331-01-456-3729 (PRS21-6)

NIIN: 01-456-3729
In stock
NSN: 5331-01-456-3729
FSC Code: 5331
MPN: PRS216

5331-01-485-0031 (PRP568-253-3110-70)

NIIN: 01-485-0031
In stock
NSN: 5331-01-485-0031
FSC Code: 5331
MPN: PRP568253311070

5331-01-542-8726 (PRP568-340)

NIIN: 01-542-8726
In stock
NSN: 5331-01-542-8726
FSC Code: 5331
MPN: PRP568340

5331-01-485-0028 (PRP568-258-3110-70)

NIIN: 01-485-0028
In stock
NSN: 5331-01-485-0028
FSC Code: 5331
MPN: PRP568258311070

5331-01-485-0022 (PRP568-046-3110-70)

NIIN: 01-485-0022
In stock
NSN: 5331-01-485-0022
FSC Code: 5331
MPN: PRP568046311070

5331-01-533-7371 (PR502-133)

NIIN: 01-533-7371
In stock
NSN: 5331-01-533-7371
FSC Code: 5331
MPN: PR502133

5331-01-435-4922 (PR-28)

NIIN: 01-435-4922
In stock
NSN: 5331-01-435-4922
FSC Code: 5331
MPN: PR28

5331-01-435-4888 (PR-20)

NIIN: 01-435-4888
In stock
NSN: 5331-01-435-4888
FSC Code: 5331
MPN: PR20

5331-01-435-4898 (PR-12)

NIIN: 01-435-4898
In stock
NSN: 5331-01-435-4898
FSC Code: 5331
MPN: PR12

5331-01-526-2771 (PP056SB1-135)

NIIN: 01-526-2771
In stock
NSN: 5331-01-526-2771
FSC Code: 5331
MPN: PP056SB1135

5331-01-491-9049 (PP056SB1-337)

NIIN: 01-491-9049
In stock
NSN: 5331-01-491-9049
FSC Code: 5331
MPN: PP056SB1337

5331-01-357-7208 (PP056TB1-113)

NIIN: 01-357-7208
In stock
NSN: 5331-01-357-7208
FSC Code: 5331
MPN: PP056TB1113

5331-01-432-1378 (PP056SB1-113)

NIIN: 01-432-1378
In stock
NSN: 5331-01-432-1378
FSC Code: 5331
MPN: PP056SB1113

5331-01-357-7207 (PP056TB1-443)

NIIN: 01-357-7207
In stock
NSN: 5331-01-357-7207
FSC Code: 5331
MPN: PP056TB1443

5331-01-525-9055 (PP056SB1-333)

NIIN: 01-525-9055
In stock
NSN: 5331-01-525-9055
FSC Code: 5331
MPN: PP056SB1333

5331-01-432-1389 (PP056SB1-446)

NIIN: 01-432-1389
In stock
NSN: 5331-01-432-1389
FSC Code: 5331
MPN: PP056SB1446

5331-01-525-9052 (PP056SB1-232)

NIIN: 01-525-9052
In stock
NSN: 5331-01-525-9052
FSC Code: 5331
MPN: PP056SB1232

5331-01-463-5432 (POS)

NIIN: 01-463-5432
In stock
NSN: 5331-01-463-5432
FSC Code: 5331
MPN: POS

5331-01-481-8921 (PM58.0765.71)

NIIN: 01-481-8921
In stock
NSN: 5331-01-481-8921
FSC Code: 5331
MPN: PM58076571

5331-01-554-7367 (PM5068531701)

NIIN: 01-554-7367
In stock
NSN: 5331-01-554-7367
FSC Code: 5331
MPN: PM5068531701

5331-01-523-7107 (PM510173-2)

NIIN: 01-523-7107
In stock
NSN: 5331-01-523-7107
FSC Code: 5331
MPN: PM5101732

5331-01-529-2534 (PM4963Z)

NIIN: 01-529-2534
In stock
NSN: 5331-01-529-2534
FSC Code: 5331
MPN: PM4963Z

5331-01-529-3047 (PM2009CT)

NIIN: 01-529-3047
In stock
NSN: 5331-01-529-3047
FSC Code: 5331
MPN: PM2009CT

5331-01-495-6242 (PM-2009-R)

NIIN: 01-495-6242
In stock
NSN: 5331-01-495-6242
FSC Code: 5331
MPN: PM2009R

5331-01-529-2652 (PM2009CN)

NIIN: 01-529-2652
In stock
NSN: 5331-01-529-2652
FSC Code: 5331
MPN: PM2009CN

5331-01-529-2651 (PM2009AA)

NIIN: 01-529-2651
In stock
NSN: 5331-01-529-2651
FSC Code: 5331
MPN: PM2009AA

5331-01-528-5786 (PM2009AX)

NIIN: 01-528-5786
In stock
NSN: 5331-01-528-5786
FSC Code: 5331
MPN: PM2009AX

5331-01-529-2535 (PM2009CH)

NIIN: 01-529-2535
In stock
NSN: 5331-01-529-2535
FSC Code: 5331
MPN: PM2009CH

5331-01-416-7318 (SEP0375-01.75-6)

NIIN: 01-416-7318
In stock
NSN: 5331-01-416-7318
FSC Code: 5331
MPN: SEP037501756

5331-01-494-9308 (UX318-01743SEDC1)

NIIN: 01-494-9308
In stock
NSN: 5331-01-494-9308
FSC Code: 5331
MPN: UX31801743SEDC1

5331-01-456-5715 (PL271-5)

NIIN: 01-456-5715
In stock
NSN: 5331-01-456-5715
FSC Code: 5331
MPN: PL2715

5331-01-554-6237 (PL12416418PC990)

NIIN: 01-554-6237
In stock
NSN: 5331-01-554-6237
FSC Code: 5331
MPN: PL12416418PC990

5331-12-340-9307 (PL)

NIIN: 12-340-9307
In stock
NSN: 5331-12-340-9307
FSC Code: 5331
MPN: PL

5331-01-451-7637 (V747-75-2-133)

NIIN: 01-451-7637
In stock
NSN: 5331-01-451-7637
FSC Code: 5331
MPN: V747752133

5331-01-381-2538 (SS-68TSW32P-JLK)

NIIN: 01-381-2538
In stock
NSN: 5331-01-381-2538
FSC Code: 5331
MPN: SS68TSW32PJLK

5331-01-382-5196 (SS-63TITEM11)

NIIN: 01-382-5196
In stock
NSN: 5331-01-382-5196
FSC Code: 5331
MPN: SS63TITEM11

5331-01-415-5520 (PK-2433)

NIIN: 01-415-5520
In stock
NSN: 5331-01-415-5520
FSC Code: 5331
MPN: PK2433

5331-01-566-1767 (PK-1359)

NIIN: 01-566-1767
In stock
NSN: 5331-01-566-1767
FSC Code: 5331
MPN: PK1359

5331-01-429-4863 (PK)

NIIN: 01-429-4863
In stock
NSN: 5331-01-429-4863
FSC Code: 5331
MPN: PK

5331-01-485-0912 (PH-1855)

NIIN: 01-485-0912
In stock
NSN: 5331-01-485-0912
FSC Code: 5331
MPN: PH1855

5331-01-485-0913 (PH-1854)

NIIN: 01-485-0913
In stock
NSN: 5331-01-485-0913
FSC Code: 5331
MPN: PH1854

5331-01-485-0907 (PH-1346)

NIIN: 01-485-0907
In stock
NSN: 5331-01-485-0907
FSC Code: 5331
MPN: PH1346

5331-01-485-0908 (PH-1275)

NIIN: 01-485-0908
In stock
NSN: 5331-01-485-0908
FSC Code: 5331
MPN: PH1275

5331-01-485-0914 (PH-1347)

NIIN: 01-485-0914
In stock
NSN: 5331-01-485-0914
FSC Code: 5331
MPN: PH1347

5331-01-347-9531 (PG13.5)

NIIN: 01-347-9531
In stock
NSN: 5331-01-347-9531
FSC Code: 5331
MPN: PG135