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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.

5331-01-321-0567 (NAS1601-152)

NIIN: 01-321-0567
In stock
NSN: 5331-01-321-0567
FSC Code: 5331
MPN: NAS1601152

5331-01-287-4823 (NAS1601-115)

NIIN: 01-287-4823
In stock
NSN: 5331-01-287-4823
FSC Code: 5331
MPN: NAS1601115

5331-01-287-4825 (NAS1601-127)

NIIN: 01-287-4825
In stock
NSN: 5331-01-287-4825
FSC Code: 5331
MPN: NAS1601127

5331-01-310-8372 (NAS1601-114)

NIIN: 01-310-8372
In stock
NSN: 5331-01-310-8372
FSC Code: 5331
MPN: NAS1601114

5331-01-320-3875 (NAS1601-033)

NIIN: 01-320-3875
In stock
NSN: 5331-01-320-3875
FSC Code: 5331
MPN: NAS1601033

5331-01-091-7955 (NAS1601-109)

NIIN: 01-091-7955
In stock
NSN: 5331-01-091-7955
FSC Code: 5331
MPN: NAS1601109

5331-01-330-9834 (NAS1601-027)

NIIN: 01-330-9834
In stock
NSN: 5331-01-330-9834
FSC Code: 5331
MPN: NAS1601027

5331-01-328-1994 (NAS1601-014)

NIIN: 01-328-1994
In stock
NSN: 5331-01-328-1994
FSC Code: 5331
MPN: NAS1601014

5331-01-308-1045 (NAS1601-009)

NIIN: 01-308-1045
In stock
NSN: 5331-01-308-1045
FSC Code: 5331
MPN: NAS1601009

5331-01-307-8538 (NAS1601-011)

NIIN: 01-307-8538
In stock
NSN: 5331-01-307-8538
FSC Code: 5331
MPN: NAS1601011

5331-00-136-5710 (NAS1596-3)

NIIN: 00-136-5710
In stock
NSN: 5331-00-136-5710
FSC Code: 5331
MPN: NAS15963

5331-00-571-9014 (NAS1594-338)

NIIN: 00-571-9014
In stock
NSN: 5331-00-571-9014
FSC Code: 5331
MPN: NAS1594338

5331-00-559-3998 (NAS1594-336)

NIIN: 00-559-3998
In stock
NSN: 5331-00-559-3998
FSC Code: 5331
MPN: NAS1594336

5331-00-559-3999 (NAS1594-329)

NIIN: 00-559-3999
In stock
NSN: 5331-00-559-3999
FSC Code: 5331
MPN: NAS1594329

5331-00-001-4726 (NAS1594-222)

NIIN: 00-001-4726
In stock
NSN: 5331-00-001-4726
FSC Code: 5331
MPN: NAS1594222

5331-00-559-3997 (NAS1594-334)

NIIN: 00-559-3997
In stock
NSN: 5331-00-559-3997
FSC Code: 5331
MPN: NAS1594334

5331-00-013-7832 (NAS1594-215)

NIIN: 00-013-7832
In stock
NSN: 5331-00-013-7832
FSC Code: 5331
MPN: NAS1594215

5331-00-182-3210 (NAS1594-115)

NIIN: 00-182-3210
In stock
NSN: 5331-00-182-3210
FSC Code: 5331
MPN: NAS1594115

5331-00-221-6153 (NAS1594-027)

NIIN: 00-221-6153
In stock
NSN: 5331-00-221-6153
FSC Code: 5331
MPN: NAS1594027

5331-00-406-6560 (NAS1594-020)

NIIN: 00-406-6560
In stock
NSN: 5331-00-406-6560
FSC Code: 5331
MPN: NAS1594020

5331-00-463-7437 (NAS1593-262)

NIIN: 00-463-7437
In stock
NSN: 5331-00-463-7437
FSC Code: 5331
MPN: NAS1593262

5331-00-006-3220 (NAS1593-264)

NIIN: 00-006-3220
In stock
NSN: 5331-00-006-3220
FSC Code: 5331
MPN: NAS1593264

5331-00-140-7667 (NAS1594-012)

NIIN: 00-140-7667
In stock
NSN: 5331-00-140-7667
FSC Code: 5331
MPN: NAS1594012

5331-01-092-0255 (NAS1593-248)

NIIN: 01-092-0255
In stock
NSN: 5331-01-092-0255
FSC Code: 5331
MPN: NAS1593248

5331-00-143-6829 (NAS1593-170)

NIIN: 00-143-6829
In stock
NSN: 5331-00-143-6829
FSC Code: 5331
MPN: NAS1593170

5331-00-121-7907 (NAS1593-146)

NIIN: 00-121-7907
In stock
NSN: 5331-00-121-7907
FSC Code: 5331
MPN: NAS1593146

5331-00-349-9492 (NAS1593-112)

NIIN: 00-349-9492
In stock
NSN: 5331-00-349-9492
FSC Code: 5331
MPN: NAS1593112

5331-00-998-0614 (NAS1593-124)

NIIN: 00-998-0614
In stock
NSN: 5331-00-998-0614
FSC Code: 5331
MPN: NAS1593124

5331-00-402-8726 (NAS1593-049)

NIIN: 00-402-8726
In stock
NSN: 5331-00-402-8726
FSC Code: 5331
MPN: NAS1593049

5331-00-928-7109 (NAS1593-030)

NIIN: 00-928-7109
In stock
NSN: 5331-00-928-7109
FSC Code: 5331
MPN: NAS1593030

5331-00-349-9491 (NAS1593-015)

NIIN: 00-349-9491
In stock
NSN: 5331-00-349-9491
FSC Code: 5331
MPN: NAS1593015

5331-01-461-7156 (ADBP1.50.3-E21G00144P.P-4AV-313)

NIIN: 01-461-7156
In stock
NSN: 5331-01-461-7156
FSC Code: 5331
MPN: ADBP1503E21G00144PP4AV313

5331-01-352-7475 (AD823)

NIIN: 01-352-7475
In stock
NSN: 5331-01-352-7475
FSC Code: 5331
MPN: AD823

5331-01-348-4815 (AD703949)

NIIN: 01-348-4815
In stock
NSN: 5331-01-348-4815
FSC Code: 5331
MPN: AD703949

5331-01-094-5104 (NAS)

NIIN: 01-094-5104
In stock
NSN: 5331-01-094-5104
FSC Code: 5331
MPN: NAS

5331-00-291-3824 (NAP831)

NIIN: 00-291-3824
In stock
NSN: 5331-00-291-3824
FSC Code: 5331
MPN: NAP831

5331-00-805-0640 (NAP351F)

NIIN: 00-805-0640
In stock
NSN: 5331-00-805-0640
FSC Code: 5331
MPN: NAP351F

5331-00-805-0663 (NAP352F)

NIIN: 00-805-0663
In stock
NSN: 5331-00-805-0663
FSC Code: 5331
MPN: NAP352F

5331-01-269-8571 (NA1584)

NIIN: 01-269-8571
In stock
NSN: 5331-01-269-8571
FSC Code: 5331
MPN: NA1584

5331-01-269-8572 (NA1590-1)

NIIN: 01-269-8572
In stock
NSN: 5331-01-269-8572
FSC Code: 5331
MPN: NA15901

5331-00-477-4693 (N95-84340)

NIIN: 00-477-4693
In stock
NSN: 5331-00-477-4693
FSC Code: 5331
MPN: N9584340

5331-00-045-3529 (N95-84850)

NIIN: 00-045-3529
In stock
NSN: 5331-00-045-3529
FSC Code: 5331
MPN: N9584850

5331-00-878-0409 (N95-84820)

NIIN: 00-878-0409
In stock
NSN: 5331-00-878-0409
FSC Code: 5331
MPN: N9584820

5331-01-271-5786 (N-95-81608)

NIIN: 01-271-5786
In stock
NSN: 5331-01-271-5786
FSC Code: 5331
MPN: N9581608

5331-01-188-9426 (N95-84321)

NIIN: 01-188-9426
In stock
NSN: 5331-01-188-9426
FSC Code: 5331
MPN: N9584321

5331-01-035-1901 (N95-81607)

NIIN: 01-035-1901
In stock
NSN: 5331-01-035-1901
FSC Code: 5331
MPN: N9581607

5331-00-460-4673 (N94-86316)

NIIN: 00-460-4673
In stock
NSN: 5331-00-460-4673
FSC Code: 5331
MPN: N9486316

5331-00-878-0386 (N95-84309)

NIIN: 00-878-0386
In stock
NSN: 5331-00-878-0386
FSC Code: 5331
MPN: N9584309