PartsTable
Technical Data Sheet
D311-070 ✓ 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 O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR, center_hole_diameter: 1.200 INCHES MAXIMUM IN, cross-sectional_height: 0.399 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-582-7665, 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
D311-070
NSN: 5331-00-582-7665
FSC: 5331 — O-RING
CAGE: 76376 — MECHANICAL RUBBER PRODUCTS COMPANY, INC. DBA MECHANICAL RUBBER PRDTS CO INC DIV MECHANICAL RUBBER PRODUCTS CO., INC. (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR
center_hole_diameter1.200 INCHES MAXIMUM IN
cross-sectional_height0.399 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN
NSN5331-00-582-7665
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: D311-070 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
CROSS-SECTIONAL HEIGHT: 0.399 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN
CENTER HOLE DIAMETER: 1.200 INCHES MAXIMUM IN
MATERIAL: RUBBER CHLOROPRENE CLASS CR
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.399 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN
CENTER HOLE DIAMETER1.200 INCHES MAXIMUM IN
MATERIALRUBBER CHLOROPRENE CLASS CR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
825-0026Interchangeable
interchangeable cross-reference
interchangeable
501939Interchangeable
interchangeable cross-reference
interchangeable
50139Interchangeable
interchangeable cross-reference
interchangeable
GTB3538Interchangeable
interchangeable cross-reference
interchangeable
5282942Interchangeable
interchangeable cross-reference
interchangeable
6-2213Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D311-070?
D311-070 is a O-RING.
What parts can replace D311-070?
There are 10 known substitutes for D311-070: 825-0026, 501939, 50139 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D311-070?
D311-070 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-582-7665. This indicates validated use in U.S. government and defense supply chains.
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