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G4057PK20 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

G4057PK20: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR, cross-sectional_height: 0.281 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-965-0744, 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
G4057PK20
NSN: 5331-00-965-0744
FSC: 5331 — O-ring
CAGE: 09032 — TATE ANDALE, LLC (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR
cross-sectional_height0.281 INCHES NOMINAL IN
NSN5331-00-965-0744
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: G4057PK20 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: 0.281 INCHES NOMINAL IN
•
MATERIAL: RUBBER CHLOROPRENE CLASS CR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.281 INCHES NOMINAL IN
MATERIALRUBBER CHLOROPRENE CLASS CR
SUBSTITUTES & CROSS-REFERENCES 2
PK20P13G4057R5Reference document
Same NSN cross-reference
Reference document — Secondary reference
M5485PC57Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is G4057PK20?
G4057PK20 is a O-RING.
What parts can replace G4057PK20?
There are 2 known substitutes for G4057PK20: PK20P13G4057R5, M5485PC57. Substitute compatibility should be verified for your specific system.
What is the NSN for G4057PK20?
G4057PK20 is cataloged in the U.S. Government catalog under NSN 5331-00-965-0744. This indicates validated use in U.S. government and defense supply chains.
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