PartsTable
Technical Data Sheet
318S7 ✓ 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 BUTADIENE-ACRYLONITRILE CLASS NBR, hardness_rating: 65.0 SHORE DUROMETER A NOMINAL, outside_diameter: 2.609 INCHES MINIMUM AND 2.665 INCHES MAXIMUM IN, center_hole_diameter: 2.349 INCHES MINIMUM AND 2.369 INCHES MAXIMUM IN, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-842-0567, 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
318S7
NSN: 5331-00-842-0567
FSC: 5331 — O-RING
CAGE: 06848 — HONEYWELL INTERNATIONAL INC DIV AEROSPACE-SOUTH BEND (BENDIX DR) (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
hardness_rating65.0 SHORE DUROMETER A NOMINAL
outside_diameter2.609 INCHES MINIMUM AND 2.665 INCHES MAXIMUM IN
center_hole_diameter2.349 INCHES MINIMUM AND 2.369 INCHES MAXIMUM IN
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
NSN5331-00-842-0567
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 318S7 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
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
OUTSIDE DIAMETER: 2.609 INCHES MINIMUM AND 2.665 INCHES MAXIMUM IN
HARDNESS RATING: 65.0 SHORE DUROMETER A NOMINAL
CENTER HOLE DIAMETER: 2.349 INCHES MINIMUM AND 2.369 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
OUTSIDE DIAMETER2.609 INCHES MINIMUM AND 2.665 INCHES MAXIMUM IN
HARDNESS RATING65.0 SHORE DUROMETER A NOMINAL
CENTER HOLE DIAMETER2.349 INCHES MINIMUM AND 2.369 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
31857Interchangeable
interchangeable cross-reference
interchangeable
111333Interchangeable
interchangeable cross-reference
interchangeable
70086Interchangeable
interchangeable cross-reference
interchangeable
73810Interchangeable
interchangeable cross-reference
interchangeable
31738Interchangeable
interchangeable cross-reference
interchangeable
31518Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 318S7?
318S7 is a O-RING.
What parts can replace 318S7?
There are 13 known substitutes for 318S7: 31857, 111333, 70086 and 10 more. Substitute compatibility should be verified for your specific system.
Is 318S7 still available?
318S7 is currently cancelled.
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