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21685T15 — BUMPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

21685T15: BUMPER.

The BUMPER is a the manufacturer industrial component. Key specifications include material: RUBBER, overall_width: 2.500 INCHES NOMINAL IN, overall_height: 2.000 INCHES NOMINAL IN, overall_length: 16.000 INCHES NOMINAL IN, style_designator: RECTANGULAR, material_hardness_rating: 65.0 DUROMETER NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-528-4422, 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
21685T15
NSN: 5340-01-528-4422
FSC: 5340 — Hardware, Commercial
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialRUBBER
overall_width2.500 INCHES NOMINAL IN
overall_height2.000 INCHES NOMINAL IN
overall_length16.000 INCHES NOMINAL IN
special_featuresBUMPER HAS A STEEL WASHER MOLDED INTO THE RUBBER ABOVE THE MOUNTING HOLE FOR ADDED REINFORCEMENT; 3 MOUNTING HOLES; DUROMETER IS 65A; MATERIAL COMPOSITION IS SBR - STYRENE-BUTADIENE A
style_designatorRECTANGULAR
material_hardness_rating65.0 DUROMETER NOMINAL
part_name_assigned_by_controlling_agencyBUMPER,STOP
NSN5340-01-528-4422
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21685T15 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
•
MATERIAL HARDNESS RATING: 65.0 DUROMETER NOMINAL
•
STYLE DESIGNATOR: RECTANGULAR
•
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT2.000 INCHES NOMINAL IN
MATERIAL HARDNESS RATING65.0 DUROMETER NOMINAL
STYLE DESIGNATORRECTANGULAR
OVERALL LENGTH16.000 INCHES NOMINAL IN
OVERALL WIDTH2.500 INCHES NOMINAL IN
SPECIAL FEATURESBUMPER HAS A STEEL WASHER MOLDED INTO THE RUBBER ABOVE THE MOUNTING HOLE FOR ADDED REINFORCEMENT; 3 MOUNTING HOLES; DUROMETER IS 65A; MATERIAL COMPOSITION IS SBR - STYRENE-BUTADIENE A
PART NAME ASSIGNED BY CONTROLLING AGENCYBUMPER,STOP
MATERIALRUBBER
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 1
15971301 FN 68Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21685T15?
21685T15 is a BUMPER.
What parts can replace 21685T15?
There is 1 known substitute for 21685T15: 15971301 FN 68. Substitute compatibility should be verified for your specific system.
What is the NSN for 21685T15?
21685T15 is cataloged in the U.S. Government catalog under NSN 5340-01-528-4422. This indicates validated use in U.S. government and defense supply chains.
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