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211055810 — STOP,MECHANICAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

211055810: STOP,MECHANICAL.

The STOP,MECHANICAL is a the manufacturer industrial component. Key specifications include material: NICKEL, design_type: STRAIGHT, overall_width: 1.982 INCHES MINIMUM AND 1.986 INCHES MAXIMUM IN, overall_height: 1.224 INCHES NOMINAL IN, overall_length: 4.557 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-377-0889, 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
211055810
NSN: 5340-01-377-0889
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL
design_typeSTRAIGHT
overall_width1.982 INCHES MINIMUM AND 1.986 INCHES MAXIMUM IN
overall_height1.224 INCHES NOMINAL IN
overall_length4.557 INCHES NOMINAL IN
NSN5340-01-377-0889
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 211055810 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
•
DESIGN TYPE: STRAIGHT
•
MATERIAL: NICKEL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.224 INCHES NOMINAL IN
DESIGN TYPESTRAIGHT
OVERALL LENGTH4.557 INCHES NOMINAL IN
OVERALL WIDTH1.982 INCHES MINIMUM AND 1.986 INCHES MAXIMUM IN
MATERIALNICKEL
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 211055810?
211055810 is a STOP,MECHANICAL.
What is the NSN for 211055810?
211055810 is cataloged in the U.S. Government catalog under NSN 5340-01-377-0889. 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.