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MIL-G-21610 TYPE 1 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MIL-G-21610 TYPE 1: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, center_hole_diameter: 1.165 INCHES MINIMUM AND 1.177 INCHES MAXIMUM IN, elongation_percentage: 300 MAXIMUM, cross-sectional_height: 0.112 INCHES MINIMUM AND 0.120 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
MIL-G-21610 TYPE 1
NSN: 5331-00-087-6748
NIINs: 000876748, 000876749, 000876750, 008924137, 009954367
FSC: 5331 — O-ring
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialRUBBER SYNTHETIC
center_hole_diameter1.165 INCHES MINIMUM AND 1.177 INCHES MAXIMUM IN
elongation_percentage300 MAXIMUM
cross-sectional_height0.112 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
NSN5331-00-087-6748
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MIL-G-21610 TYPE 1 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
19-660-377PC38Reference 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 MIL-G-21610 TYPE 1?
MIL-G-21610 TYPE 1 is a O-RING.
What parts can replace MIL-G-21610 TYPE 1?
There are 2 known substitutes for MIL-G-21610 TYPE 1: 19-660-377-00PC038, 19-660-377PC38. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-G-21610 TYPE 1?
MIL-G-21610 TYPE 1 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.