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19-660-377PC38 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

19-660-377PC38: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, center_hole_diameter: 16.565 INCHES MINIMUM AND 16.685 INCHES MAXIMUM IN, cross-sectional_height: 0.133 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-087-6748, 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
19-660-377PC38
NSN: 5331-00-087-6748
FSC: 5331 — O-ring
CAGE: 92392 — ALLIS-CHALMERS CORP (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
center_hole_diameter16.565 INCHES MINIMUM AND 16.685 INCHES MAXIMUM IN
cross-sectional_height0.133 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
NSN5331-00-087-6748
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 19-660-377PC38 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: 0.133 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 16.565 INCHES MINIMUM AND 16.685 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.133 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
CENTER HOLE DIAMETER16.565 INCHES MINIMUM AND 16.685 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
SUBSTITUTES & CROSS-REFERENCES 2
19-660-377-00PC038Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-G-21610 TYPE 1Reference document
Same NSN cross-reference
Reference document — Identification 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 19-660-377PC38?
19-660-377PC38 is a O-RING.
What parts can replace 19-660-377PC38?
There are 2 known substitutes for 19-660-377PC38: 19-660-377-00PC038, MIL-G-21610 TYPE 1. Substitute compatibility should be verified for your specific system.
What is the NSN for 19-660-377PC38?
19-660-377PC38 is cataloged in the U.S. Government catalog under NSN 5331-00-087-6748. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.