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20344-3 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

20344-3: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include special_features: 1 5/16 INS. I.D.;1 9/16 INS.

O.D.;1/8 IN. WIDTH IN, end_item_identification: 2030-01-411-3925; DAVITS,BOAT,BOOM P/N D5000CT ONBOARD RHIB 14' U.S. COAST GUARD VESSELS.

This part is cataloged in the U.S. Government catalog under NSN 5330-00-135-5106, 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
20344-3
NSN: 5330-00-135-5106
NIINs: 001355106, 014578989
FSC: 5330 — Packing and Gasket Materials
CAGE: 77969 — RUBBERCRAFT CORPORATION OF CALIFORNIA, LTD. DBA RUBBERCRAFT CORP (USA)
SPECIFICATIONS
special_features1 5/16 INS. I.D.;1 9/16 INS. O.D.;1/8 IN. WIDTH IN
end_item_identification2030-01-411-3925; DAVITS,BOAT,BOOM P/N D5000CT ONBOARD RHIB 14' U.S. COAST GUARD VESSELS
NSN5330-00-135-5106
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 20344-3 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
•
PACKING INSIDE DIAMETER: 0.181 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.438 INCHES NOMINAL IN
•
PACKING RING CROSS-SECTIONAL DIAMETER: 0.072 INCHES NOMINAL IN
•
RETAINER THICKNESS: 0.050 INCHES NOMINAL IN
•
SURFACE TREATMENT: ANODIZE RETAINER
•
MATERIAL: RUBBER SYNTHETIC PACKING
•
CONSTRUCTION: ONE-PIECE
TECHNICAL CHARACTERISTICS
PACKING INSIDE DIAMETER0.181 INCHES NOMINAL IN
OUTSIDE DIAMETER0.438 INCHES NOMINAL IN
PACKING RING CROSS-SECTIONAL DIAMETER0.072 INCHES NOMINAL IN
RETAINER THICKNESS0.050 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE RETAINER
MATERIALRUBBER SYNTHETIC PACKING
MATERIALALUMINUM ALLOY RETAINER
CONSTRUCTIONONE-PIECE
SUBSTITUTES & CROSS-REFERENCES 3
R98SA04CReference document
Same NSN cross-reference
Reference document — Secondary reference
658414-043Reference document
Same NSN cross-reference
Reference document — Secondary reference
668416-04-3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 20344-3?
20344-3 is a O-RING.
What parts can replace 20344-3?
There are 3 known substitutes for 20344-3: R98SA04C, 658414-043, 668416-04-3. Substitute compatibility should be verified for your specific system.
What is the NSN for 20344-3?
20344-3 is cataloged in the U.S. Government catalog under NSN 5330-00-135-5106. 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.