3957440 — O-RING

✓ Government record, cited

— · ORING SEAL

PRODUCT OVERVIEW

3957440: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER SILICONE CLASS Q, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 0.493 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN, center_hole_diameter: 0.359 INCHES MINIMUM AND 0.369 INCHES MAXIMUM IN, elongation_percentage: 125 MAXIMUM, cross-sectional_height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-003-9193, 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

3957440

NSN: 5331-00-003-9193
FSC: 5331 — O-ring
CAGE: 15434 — CUMMINS INC. (USA)

SPECIFICATIONS

material	RUBBER SILICONE CLASS Q
hardness_rating	70.0 SHORE DUROMETER A NOMINAL
outside_diameter	0.493 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
center_hole_diameter	0.359 INCHES MINIMUM AND 0.369 INCHES MAXIMUM IN
elongation_percentage	125 MAXIMUM
cross-sectional_height	0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
NSN	5331-00-003-9193

COMPONENT DIAGRAM

KEY FEATURES

•

CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN

•

OUTSIDE DIAMETER: 0.493 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN

•

HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL

•

ELONGATION PERCENTAGE: 125 MAXIMUM

•

CENTER HOLE DIAMETER: 0.359 INCHES MINIMUM AND 0.369 INCHES MAXIMUM IN

•

MATERIAL: RUBBER SILICONE CLASS Q

TECHNICAL CHARACTERISTICS

CROSS-SECTIONAL HEIGHT	0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
OUTSIDE DIAMETER	0.493 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
HARDNESS RATING	70.0 SHORE DUROMETER A NOMINAL
ELONGATION PERCENTAGE	125 MAXIMUM
CENTER HOLE DIAMETER	0.359 INCHES MINIMUM AND 0.369 INCHES MAXIMUM IN
MATERIAL	RUBBER SILICONE CLASS Q

SUBSTITUTES & CROSS-REFERENCES 7

MS-9068-012Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

2-012 S604-70Reference document

Same NSN cross-reference

Reference document — Secondary reference

5331PL0899162Reference document

Same NSN cross-reference

Reference document — Informative reference only

AS3582-012Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

5331PL1833250Reference document

Same NSN cross-reference

Reference document — Informative reference only

ABS3304Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Shelf-life managedAcquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 3957440?

3957440 is a O-RING.

What parts can replace 3957440?

There are 7 known substitutes for 3957440: MS-9068-012, 2-012 S604-70, 5331PL0899162 and 4 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 3957440?

3957440 is cataloged in the U.S. Government catalog under NSN 5331-00-003-9193. This indicates validated use in U.S. government and defense supply chains.

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3957440 — O-RING

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