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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.

5331-01-374-1043 (CC-10588)

NIIN: 01-374-1043
In stock
NSN: 5331-01-374-1043
FSC Code: 5331
MPN: CC10588

5331-01-374-1047 (CC-10577)

NIIN: 01-374-1047
In stock
NSN: 5331-01-374-1047
FSC Code: 5331
MPN: CC10577

5331-01-374-1048 (CC-10137)

NIIN: 01-374-1048
In stock
NSN: 5331-01-374-1048
FSC Code: 5331
MPN: CC10137

5331-01-374-1045 (CC-10539)

NIIN: 01-374-1045
In stock
NSN: 5331-01-374-1045
FSC Code: 5331
MPN: CC10539

5331-01-190-1884 (S5734)

NIIN: 01-190-1884
In stock
NSN: 5331-01-190-1884
FSC Code: 5331
MPN: S5734

5331-01-190-1888 (S5633)

NIIN: 01-190-1888
In stock
NSN: 5331-01-190-1888
FSC Code: 5331
MPN: S5633

5331-01-257-4789 (S555X67)

NIIN: 01-257-4789
In stock
NSN: 5331-01-257-4789
FSC Code: 5331
MPN: S555X67

5331-01-247-2766 (S555X104)

NIIN: 01-247-2766
In stock
NSN: 5331-01-247-2766
FSC Code: 5331
MPN: S555X104

5331-01-248-3253 (S555X109)

NIIN: 01-248-3253
In stock
NSN: 5331-01-248-3253
FSC Code: 5331
MPN: S555X109

5331-01-255-9278 (S555X103)

NIIN: 01-255-9278
In stock
NSN: 5331-01-255-9278
FSC Code: 5331
MPN: S555X103

5331-01-258-0090 (S555X25)

NIIN: 01-258-0090
In stock
NSN: 5331-01-258-0090
FSC Code: 5331
MPN: S555X25

5331-00-355-5637 (S546637)

NIIN: 00-355-5637
In stock
NSN: 5331-00-355-5637
FSC Code: 5331
MPN: S546637

5331-01-388-6237 (CB-87-23)

NIIN: 01-388-6237
In stock
NSN: 5331-01-388-6237
FSC Code: 5331
MPN: CB8723

5331-01-334-7195 (S-506)

NIIN: 01-334-7195
In stock
NSN: 5331-01-334-7195
FSC Code: 5331
MPN: S506

5331-01-532-6824 (CB/5855-30R)

NIIN: 01-532-6824
In stock
NSN: 5331-01-532-6824
FSC Code: 5331
MPN: CB585530R

5331-01-098-1395 (S49-113)

NIIN: 01-098-1395
In stock
NSN: 5331-01-098-1395
FSC Code: 5331
MPN: S49113

5331-01-424-9457 (PL19XL5353458CR)

NIIN: 01-424-9457
In stock
NSN: 5331-01-424-9457
FSC Code: 5331
MPN: PL19XL5353458CR

5331-01-424-8831 (PL19XL5353458CR)

NIIN: 01-424-8831
In stock
NSN: 5331-01-424-8831
FSC Code: 5331
MPN: PL19XL5353458CR

5331-01-424-9465 (PL19XL5353558CR)

NIIN: 01-424-9465
In stock
NSN: 5331-01-424-9465
FSC Code: 5331
MPN: PL19XL5353558CR

5331-01-424-9581 (PL19XL5353558CR)

NIIN: 01-424-9581
In stock
NSN: 5331-01-424-9581
FSC Code: 5331
MPN: PL19XL5353558CR

5331-01-424-8854 (PL19XL5353458CR)

NIIN: 01-424-8854
In stock
NSN: 5331-01-424-8854
FSC Code: 5331
MPN: PL19XL5353458CR

5331-01-424-9583 (PL19XL5353458CR)

NIIN: 01-424-9583
In stock
NSN: 5331-01-424-9583
FSC Code: 5331
MPN: PL19XL5353458CR

5331-01-424-8839 (PL19XL5353458CR)

NIIN: 01-424-8839
In stock
NSN: 5331-01-424-8839
FSC Code: 5331
MPN: PL19XL5353458CR

5331-01-425-0832 (CAT19.019)

NIIN: 01-425-0832
In stock
NSN: 5331-01-425-0832
FSC Code: 5331
MPN: CAT19019

5331-01-424-8846 (PL19XL5353458CR)

NIIN: 01-424-8846
In stock
NSN: 5331-01-424-8846
FSC Code: 5331
MPN: PL19XL5353458CR

5331-01-425-0833 (PL19XL5353458CR)

NIIN: 01-425-0833
In stock
NSN: 5331-01-425-0833
FSC Code: 5331
MPN: PL19XL5353458CR

5331-01-542-3225 (V72246)

NIIN: 01-542-3225
In stock
NSN: 5331-01-542-3225
FSC Code: 5331
MPN: V72246

5331-01-431-5671 (CAT)

NIIN: 01-431-5671
In stock
NSN: 5331-01-431-5671
FSC Code: 5331
MPN: CAT

5331-00-402-0081 (S4540031-11)

NIIN: 00-402-0081
In stock
NSN: 5331-00-402-0081
FSC Code: 5331
MPN: S454003111

5331-00-062-1255 (S4540031-10)

NIIN: 00-062-1255
In stock
NSN: 5331-00-062-1255
FSC Code: 5331
MPN: S454003110

5331-00-599-8715 (S4405616-29)

NIIN: 00-599-8715
In stock
NSN: 5331-00-599-8715
FSC Code: 5331
MPN: S440561629

5331-00-497-0182 (S4449825-36)

NIIN: 00-497-0182
In stock
NSN: 5331-00-497-0182
FSC Code: 5331
MPN: S444982536

5331-00-562-8239 (S4359314-5)

NIIN: 00-562-8239
In stock
NSN: 5331-00-562-8239
FSC Code: 5331
MPN: S43593145

5331-00-111-0776 (S43228)

NIIN: 00-111-0776
In stock
NSN: 5331-00-111-0776
FSC Code: 5331
MPN: S43228

5331-00-111-0777 (S43220)

NIIN: 00-111-0777
In stock
NSN: 5331-00-111-0777
FSC Code: 5331
MPN: S43220

5331-00-929-5427 (S43217)

NIIN: 00-929-5427
In stock
NSN: 5331-00-929-5427
FSC Code: 5331
MPN: S43217

5331-01-215-3819 (S4241-33)

NIIN: 01-215-3819
In stock
NSN: 5331-01-215-3819
FSC Code: 5331
MPN: S424133

5331-01-352-7486 (CA9037-66D)

NIIN: 01-352-7486
In stock
NSN: 5331-01-352-7486
FSC Code: 5331
MPN: CA903766D

5331-01-139-0604 (S-3746)

NIIN: 01-139-0604
In stock
NSN: 5331-01-139-0604
FSC Code: 5331
MPN: S3746

5331-01-454-5171 (CA137)

NIIN: 01-454-5171
In stock
NSN: 5331-01-454-5171
FSC Code: 5331
MPN: CA137

5331-01-312-4819 (S33861-220-99)

NIIN: 01-312-4819
In stock
NSN: 5331-01-312-4819
FSC Code: 5331
MPN: S3386122099

5331-01-304-5141 (S33157-218-99)

NIIN: 01-304-5141
In stock
NSN: 5331-01-304-5141
FSC Code: 5331
MPN: S3315721899

5331-01-268-1024 (S3-1081-20-HT.767)

NIIN: 01-268-1024
In stock
NSN: 5331-01-268-1024
FSC Code: 5331
MPN: S3108120HT767

5331-00-417-3528 (S3101)

NIIN: 00-417-3528
In stock
NSN: 5331-00-417-3528
FSC Code: 5331
MPN: S3101

5331-01-292-0153 (S30775-3071)

NIIN: 01-292-0153
In stock
NSN: 5331-01-292-0153
FSC Code: 5331
MPN: S307753071

5331-01-304-7773 (S30775-114P99)

NIIN: 01-304-7773
In stock
NSN: 5331-01-304-7773
FSC Code: 5331
MPN: S30775114P99

5331-01-304-7772 (S30772-218P99)

NIIN: 01-304-7772
In stock
NSN: 5331-01-304-7772
FSC Code: 5331
MPN: S30772218P99

5331-01-333-8634 (S30772-124G20N)

NIIN: 01-333-8634
In stock
NSN: 5331-01-333-8634
FSC Code: 5331
MPN: S30772124G20N