PartsTable
Technical Data Sheet
PartsTable / O-RING / 31756,PC.7
31756,PC.7 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The 31756,PC.7 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-228-0605, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
31756,PC.7
NSN: 5331-01-228-0605
FSC: 5331 — O-RING
CAGE: 09032 — TATE ANDALE, LLC (USA)
SPECIFICATIONS
Part Number31756,PC.7
NSN5331-01-228-0605
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 31756,PC.7 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
DEPARTURE FROM CITED DOCUMENT: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
•
SPECIFICATION/STANDARD DATA: 81349-AA55801-143D7 GOVERNMENT SPECIFICATION
•
MATERIAL DOCUMENT AND CLASSIFICATION: ZZ-R-765,CL 2B,GR 70 FED SPEC SINGLE MATERIAL RESPONSE
•
PERIPHERAL DIAMETER: 2.641 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
•
MATERIAL: RUBBER
•
CENTER HOLE DIAMETER: 2.415 INCHES MINIMUM AND 2.455 INCHES MAXIMUM IN
•
CRITICALITY CODE JUSTIFICATION: ZZZW
TECHNICAL CHARACTERISTICS (FLIS)
DEPARTURE FROM CITED DOCUMENTMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
SPECIFICATION/STANDARD DATA81349-AA55801-143D7 GOVERNMENT SPECIFICATION
MATERIAL DOCUMENT AND CLASSIFICATIONZZ-R-765,CL 2B,GR 70 FED SPEC SINGLE MATERIAL RESPONSE
PERIPHERAL DIAMETER2.641 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
MATERIALRUBBER
CENTER HOLE DIAMETER2.415 INCHES MINIMUM AND 2.455 INCHES MAXIMUM IN
CRITICALITY CODE JUSTIFICATIONZZZW
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
ARP568-212ZZR76 5GR70Interchangeable
interchangeable cross-reference
interchangeable
AS568-212Interchangeable
interchangeable cross-reference
interchangeable
AA55801-212D7Interchangeable
interchangeable cross-reference
interchangeable
AA55801-124-DACPInterchangeable
interchangeable cross-reference
interchangeable
STSV047AN124CPInterchangeable
interchangeable cross-reference
interchangeable
STSV047AN124Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 31756,PC.7?
31756,PC.7 is a 31756,PC.7.
What parts can replace 31756,PC.7?
There are 14 known substitutes for 31756,PC.7: ARP568-212ZZR76 5GR70, AS568-212, AA55801-212D7 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 31756,PC.7?
31756,PC.7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-228-0605. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026