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1691AS235 — BUMPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1691AS235: BUMPER.

The BUMPER is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-STYRENE CLASS SBR, hole_diameter: 0.156 INCHES NOMINAL IN, overall_height: 0.440 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN, first_counterbore_depth: 0.250 INCHES NOMINAL IN, material_hardness_rating: 60.0 DUROMETER MINIMUM AND 70.0 DUROMETER MAXIMUM, first_counterbore_diameter: 0.310 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-318-6911, 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
1691AS235
NSN: 5340-01-318-6911
FSC: 5340 — Hardware, Commercial
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-STYRENE CLASS SBR
hole_diameter0.156 INCHES NOMINAL IN
overall_height0.440 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
first_counterbore_depth0.250 INCHES NOMINAL IN
material_hardness_rating60.0 DUROMETER MINIMUM AND 70.0 DUROMETER MAXIMUM
first_counterbore_diameter0.310 INCHES NOMINAL IN
outside/top_flange_diameter0.690 INCHES MINIMUM AND 0.810 INCHES MAXIMUM IN
NSN5340-01-318-6911
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1691AS235 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
•
OUTSIDE/TOP FLANGE DIAMETER: 0.690 INCHES MINIMUM AND 0.810 INCHES MAXIMUM IN
•
MATERIAL HARDNESS RATING: 60.0 DUROMETER MINIMUM AND 70.0 DUROMETER MAXIMUM
•
FIRST COUNTERBORE DIAMETER: 0.310 INCHES NOMINAL IN
•
FIRST COUNTERBORE DEPTH: 0.250 INCHES NOMINAL IN
•
COLOR: BLACK
•
MATERIAL: RUBBER BUTADIENE-STYRENE CLASS SBR
•
HOLE DIAMETER: 0.156 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.440 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
OUTSIDE/TOP FLANGE DIAMETER0.690 INCHES MINIMUM AND 0.810 INCHES MAXIMUM IN
MATERIAL HARDNESS RATING60.0 DUROMETER MINIMUM AND 70.0 DUROMETER MAXIMUM
FIRST COUNTERBORE DIAMETER0.310 INCHES NOMINAL IN
FIRST COUNTERBORE DEPTH0.250 INCHES NOMINAL IN
COLORBLACK
MATERIALRUBBER BUTADIENE-STYRENE CLASS SBR
HOLE DIAMETER0.156 INCHES NOMINAL IN
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
1359BWReference document
Same NSN cross-reference
Reference document — Secondary reference
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 1691AS235?
1691AS235 is a BUMPER.
What parts can replace 1691AS235?
There is 1 known substitute for 1691AS235: 1359BW. Substitute compatibility should be verified for your specific system.
What is the NSN for 1691AS235?
1691AS235 is cataloged in the U.S. Government catalog under NSN 5340-01-318-6911. This indicates validated use in U.S. government and defense supply chains.
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