PartsTable
Technical Data Sheet
GB505L1 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The BUMPER is a the manufacturer industrial component. Key specifications include material: RUBBER, shank_length: 0.250 INCHES NOMINAL IN, overall_height: 0.375 INCHES NOMINAL IN, shank_diameter: 0.250 INCHES NOMINAL IN, style_designator: ROUND TOP FLANGE, outside/top_flange_diameter: 0.438 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-189-6754, 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
GB505L1
NSN: 5340-01-189-6754
FSC: 5340
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialRUBBER
shank_length0.250 INCHES NOMINAL IN
overall_height0.375 INCHES NOMINAL IN
shank_diameter0.250 INCHES NOMINAL IN
style_designatorROUND TOP FLANGE
outside/top_flange_diameter0.438 INCHES NOMINAL IN
specification/standard_data26512-GB505L1 MANUFACTURERS SPECIFICATION
NSN5340-01-189-6754
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: GB505L1 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
SPECIFICATION/STANDARD DATA: 26512-GB505L1 MANUFACTURERS SPECIFICATION
OUTSIDE/TOP FLANGE DIAMETER: 0.438 INCHES NOMINAL IN
SHANK DIAMETER: 0.250 INCHES NOMINAL IN
MATERIAL: RUBBER
STYLE DESIGNATOR: ROUND TOP FLANGE
SHANK LENGTH: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SPECIFICATION/STANDARD DATA26512-GB505L1 MANUFACTURERS SPECIFICATION
OUTSIDE/TOP FLANGE DIAMETER0.438 INCHES NOMINAL IN
SHANK DIAMETER0.250 INCHES NOMINAL IN
MATERIALRUBBER
OVERALL HEIGHT0.375 INCHES NOMINAL IN
STYLE DESIGNATORROUND TOP FLANGE
SHANK LENGTH0.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
B8130EUpgraded Successor
successor cross-reference
successor
B8126EUpgraded Successor
successor cross-reference
successor
KYC24Upgraded Successor
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successor
2004-12Upgraded Successor
successor cross-reference
successor
91-3-11-45 LSTUpgraded Successor
successor cross-reference
successor
F91B237Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is GB505L1?
GB505L1 is a BUMPER.
What parts can replace GB505L1?
There are 12 known substitutes for GB505L1: B8130E, B8126E, KYC24 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for GB505L1?
GB505L1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-189-6754. This indicates validated use in U.S. government and defense supply chains.
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