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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.

5331-00-003-5501 (22-525-6-S1)

NIIN: 00-003-5501
In stock
NSN: 5331-00-003-5501
FSC Code: 5331
MPN: 225256S1

5331-00-709-2752 (22-525-6TE)

NIIN: 00-709-2752
In stock
NSN: 5331-00-709-2752
FSC Code: 5331
MPN: 225256TE

5331-00-871-8425 (22-525-1HT)

NIIN: 00-871-8425
In stock
NSN: 5331-00-871-8425
FSC Code: 5331
MPN: 225251HT

5331-00-855-1228 (22-525-5SI)

NIIN: 00-855-1228
In stock
NSN: 5331-00-855-1228
FSC Code: 5331
MPN: 225255SI

5331-01-129-3148 (2-252L1223-60)

NIIN: 01-129-3148
In stock
NSN: 5331-01-129-3148
FSC Code: 5331
MPN: 2252L122360

5331-00-285-9775 (2-252N179-70)

NIIN: 00-285-9775
In stock
NSN: 5331-00-285-9775
FSC Code: 5331
MPN: 2252N17970

5331-01-222-8660 (2-252N304-75)

NIIN: 01-222-8660
In stock
NSN: 5331-01-222-8660
FSC Code: 5331
MPN: 2252N30475

5331-01-454-6211 (11E49)

NIIN: 01-454-6211
In stock
NSN: 5331-01-454-6211
FSC Code: 5331
MPN: 11E49

5331-00-881-2666 (2-252-N674-70)

NIIN: 00-881-2666
In stock
NSN: 5331-00-881-2666
FSC Code: 5331
MPN: 2252N67470

5331-01-106-0938 (2-253)

NIIN: 01-106-0938
In stock
NSN: 5331-01-106-0938
FSC Code: 5331
MPN: 2253

5331-01-374-6735 (3205082E62)

NIIN: 01-374-6735
In stock
NSN: 5331-01-374-6735
FSC Code: 5331
MPN: 3205082E62

5331-01-375-6214 (3205082E68)

NIIN: 01-375-6214
In stock
NSN: 5331-01-375-6214
FSC Code: 5331
MPN: 3205082E68

5331-00-846-7777 (2253547ITEM1)

NIIN: 00-846-7777
In stock
NSN: 5331-00-846-7777
FSC Code: 5331
MPN: 2253547ITEM1

5331-00-846-7778 (2253547-2)

NIIN: 00-846-7778
In stock
NSN: 5331-00-846-7778
FSC Code: 5331
MPN: 22535472

5331-00-846-7779 (2253547ITEM3)

NIIN: 00-846-7779
In stock
NSN: 5331-00-846-7779
FSC Code: 5331
MPN: 2253547ITEM3

5331-00-036-6774 (2-253L449-60)

NIIN: 00-036-6774
In stock
NSN: 5331-00-036-6774
FSC Code: 5331
MPN: 2253L44960

5331-01-147-5371 (2-253E540-80)

NIIN: 01-147-5371
In stock
NSN: 5331-01-147-5371
FSC Code: 5331
MPN: 2253E54080

5331-01-129-3153 (2-253L1223-60)

NIIN: 01-129-3153
In stock
NSN: 5331-01-129-3153
FSC Code: 5331
MPN: 2253L122360

5331-00-405-0797 (2-253N304-70)

NIIN: 00-405-0797
In stock
NSN: 5331-00-405-0797
FSC Code: 5331
MPN: 2253N30470

5331-01-237-1706 (2-253N674-70)

NIIN: 01-237-1706
In stock
NSN: 5331-01-237-1706
FSC Code: 5331
MPN: 2253N67470

5331-01-187-6128 (2-253V730-75)

NIIN: 01-187-6128
In stock
NSN: 5331-01-187-6128
FSC Code: 5331
MPN: 2253V73075

5331-01-230-5216 (2-254)

NIIN: 01-230-5216
In stock
NSN: 5331-01-230-5216
FSC Code: 5331
MPN: 2254

5331-00-684-2286 (2-254)

NIIN: 00-684-2286
In stock
NSN: 5331-00-684-2286
FSC Code: 5331
MPN: 2254

5331-00-889-2066 (225444PC62)

NIIN: 00-889-2066
In stock
NSN: 5331-00-889-2066
FSC Code: 5331
MPN: 225444PC62

5331-00-990-2590 (225444PC67)

NIIN: 00-990-2590
In stock
NSN: 5331-00-990-2590
FSC Code: 5331
MPN: 225444PC67

5331-00-226-5706 (2254276ITEM1)

NIIN: 00-226-5706
In stock
NSN: 5331-00-226-5706
FSC Code: 5331
MPN: 2254276ITEM1

5331-01-214-7918 (22546-10)

NIIN: 01-214-7918
In stock
NSN: 5331-01-214-7918
FSC Code: 5331
MPN: 2254610

5331-01-249-2877 (22546-10)

NIIN: 01-249-2877
In stock
NSN: 5331-01-249-2877
FSC Code: 5331
MPN: 2254610

5331-01-214-3764 (22546-112)

NIIN: 01-214-3764
In stock
NSN: 5331-01-214-3764
FSC Code: 5331
MPN: 22546112

5331-01-246-6249 (22546-12)

NIIN: 01-246-6249
In stock
NSN: 5331-01-246-6249
FSC Code: 5331
MPN: 2254612

5331-01-255-3377 (22546-112)

NIIN: 01-255-3377
In stock
NSN: 5331-01-255-3377
FSC Code: 5331
MPN: 22546112

5331-01-057-5845 (22546-112)

NIIN: 01-057-5845
In stock
NSN: 5331-01-057-5845
FSC Code: 5331
MPN: 22546112

5331-00-122-7253 (2-254-N-219-70)

NIIN: 00-122-7253
In stock
NSN: 5331-00-122-7253
FSC Code: 5331
MPN: 2254N21970

5331-01-217-2196 (2-254E692-75)

NIIN: 01-217-2196
In stock
NSN: 5331-01-217-2196
FSC Code: 5331
MPN: 2254E69275

5331-01-300-1528 (2-254S604-70)

NIIN: 01-300-1528
In stock
NSN: 5331-01-300-1528
FSC Code: 5331
MPN: 2254S60470

5331-00-165-1969 (2-254V0747-75)

NIIN: 00-165-1969
In stock
NSN: 5331-00-165-1969
FSC Code: 5331
MPN: 2254V074775

5331-01-092-2118 (2-254S455-70)

NIIN: 01-092-2118
In stock
NSN: 5331-01-092-2118
FSC Code: 5331
MPN: 2254S45570

5331-00-426-3742 (22550-112)

NIIN: 00-426-3742
In stock
NSN: 5331-00-426-3742
FSC Code: 5331
MPN: 22550112

5331-01-031-8209 (2-255)

NIIN: 01-031-8209
In stock
NSN: 5331-01-031-8209
FSC Code: 5331
MPN: 2255

5331-01-102-9881 (2-254S595-50)

NIIN: 01-102-9881
In stock
NSN: 5331-01-102-9881
FSC Code: 5331
MPN: 2254S59550

5331-15-163-3119 ((241)A0106D3113455A)

NIIN: 15-163-3119
In stock
NSN: 5331-15-163-3119
FSC Code: 5331
MPN: 241A0106D3113455A

5331-00-954-1285 (2-255)

NIIN: 00-954-1285
In stock
NSN: 5331-00-954-1285
FSC Code: 5331
MPN: 2255

5331-14-379-8408 ((241)A2142AS12801-012)

NIIN: 14-379-8408
In stock
NSN: 5331-14-379-8408
FSC Code: 5331
MPN: 241A2142AS12801012

5331-15-198-0733 ((241)A0106D31114630A)

NIIN: 15-198-0733
In stock
NSN: 5331-15-198-0733
FSC Code: 5331
MPN: 241A0106D31114630A

5331-01-023-0783 (2-255)

NIIN: 01-023-0783
In stock
NSN: 5331-01-023-0783
FSC Code: 5331
MPN: 2255

5331-12-130-1672 ((241)A39630-114956)

NIIN: 12-130-1672
In stock
NSN: 5331-12-130-1672
FSC Code: 5331
MPN: 241A39630114956

5331-00-809-2147 (22550-219)

NIIN: 00-809-2147
In stock
NSN: 5331-00-809-2147
FSC Code: 5331
MPN: 22550219

5331-00-690-9742 (2-255)

NIIN: 00-690-9742
In stock
NSN: 5331-00-690-9742
FSC Code: 5331
MPN: 2255