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22858-1 — SEAT RISER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

22858-1: SEAT RISER.

The SEAT RISER is a the manufacturer industrial component. Key specifications include end_item_identification: 3810-00-763-7728, general_characteristics_item_description: IRREGULAR,FLANGED SHAPE;HEIGHT ADJUSTER FOR SEAT. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-363-6316, 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
22858-1
NSN: 5340-00-363-6316
NIINs: 003636316, 004050043
FSC: 5340 — Hardware, Commercial
CAGE: 64829 — ARVINMERITOR INC (USA)
SPECIFICATIONS
end_item_identification3810-00-763-7728
general_characteristics_item_descriptionIRREGULAR,FLANGED SHAPE;HEIGHT ADJUSTER FOR SEAT
NSN5340-00-363-6316
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 22858-1 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
•
MOUNTING HOLE SIZE: 1.281 INCHES NOMINAL IN
•
MOUNTING PAD: NOT INCLUDED
•
CUSHION: NOT INCLUDED
•
MATERIAL: STEEL LOCATION NOT OTHERWISE SPECIFIED
•
INSIDE DIAMETER/ARCH LENGTH: 2.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE SIZE1.281 INCHES NOMINAL IN
MOUNTING PADNOT INCLUDED
OVERALL LENGTH4.250 INCHES NOMINAL IN
OVERALL WIDTH2.500 INCHES NOMINAL IN
CUSHIONNOT INCLUDED
MATERIALSTEEL LOCATION NOT OTHERWISE SPECIFIED
INSIDE DIAMETER/ARCH LENGTH2.250 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 22858-1?
22858-1 is a SEAT RISER.
What is the NSN for 22858-1?
22858-1 is cataloged in the U.S. Government catalog under NSN 5340-00-363-6316. 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.