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Technical Data Sheet
PartsTable / COMPONENT / 981-5/8
981-5/8 ✓ 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 981-5/8 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 5340-00-290-4139, 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
981-5/8
NSN: 5340-00-290-4139
FSC: 5340
CAGE: 73145 — HINDLEY MANUFACTURING COMPANY INC (USA)
SPECIFICATIONS
Part Number981-5/8
NSN5340-00-290-4139
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 981-5/8 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
•
PROJECTION LENGTH: 0.625 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE
•
STYLE DESIGNATOR: ROUND BEND
•
WIRE DIAMETER: 0.080 INCHES NOMINAL IN
•
NONMACHINE NOMINAL THREAD DIAMETER: 0.086 INCHES IN
•
NONMACHINE THREAD STYLE: GIMLET POINT (TYPE A, AB OR BA)
TECHNICAL CHARACTERISTICS (FLIS)
PROJECTION LENGTH0.625 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
NONDEFINITIVE SPEC/STD DATA1 TYPE
STYLE DESIGNATORROUND BEND
WIRE DIAMETER0.080 INCHES NOMINAL IN
NONMACHINE NOMINAL THREAD DIAMETER0.086 INCHES IN
NONMACHINE THREAD STYLEGIMLET POINT (TYPE A, AB OR BA)
OVERALL LENGTH1.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
8158Upgraded Successor
successor cross-reference
successor
11926Upgraded Successor
successor cross-reference
successor
98158Upgraded Successor
successor cross-reference
successor
6530NCM082592Upgraded Successor
successor cross-reference
successor
DUAL D/E CYLINDER CARTUpgraded Successor
successor cross-reference
successor
6205Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 981-5/8?
981-5/8 is a 981-5/8.
What parts can replace 981-5/8?
There are 17 known substitutes for 981-5/8: 8158, 11926, 98158 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 981-5/8?
981-5/8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-290-4139. 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