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2129J56-2 — PLATE,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

2129J56-2: PLATE,MOUNTING.

The PLATE,MOUNTING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-01-616-7892, 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
2129J56-2
NSN: 5340-01-616-7892
FSC: 5340 — Hardware, Commercial
CAGE: 830Q4 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS-WRIGHT STEAM AND AIR SOLUTIONS DIV STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
Part Number2129J56-2
NSN5340-01-616-7892
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2129J56-2 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
SUBSTITUTES & CROSS-REFERENCES 4
873E193 ITEM 69Reference document
Same NSN cross-reference
Reference document — Secondary reference
2129J56 PT 2Reference document
Same NSN cross-reference
Reference document — Secondary reference
873E192 ITEM 26Reference document
Same NSN cross-reference
Reference document — Secondary reference
2129J56Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2129J56-2?
2129J56-2 is a PLATE,MOUNTING.
What parts can replace 2129J56-2?
There are 4 known substitutes for 2129J56-2: 873E193 ITEM 69, 2129J56 PT 2, 873E192 ITEM 26 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2129J56-2?
2129J56-2 is cataloged in the U.S. Government catalog under NSN 5340-01-616-7892. 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.