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PartsTable / COMPONENT / 40725-1
40725-1 ✓ 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 SYNTHETIC, hole_diameter: 0.218 INCHES NOMINAL IN, overall_height: 0.630 INCHES NOMINAL IN, style_designator: FLAT TOP CHAMFERED SHANK COUNTERBORED, chamfer_angle_in_deg: 15.0, first_counterbore_depth: 0.440 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 5340-00-221-9755, 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
40725-1
NSN: 5340-00-221-9755
FSC: 5340
CAGE: 11189 — KAISER AEROSPACE AND ELECTRONICS CORP PHOENIX ELECTRONICS PLANT (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
hole_diameter0.218 INCHES NOMINAL IN
overall_height0.630 INCHES NOMINAL IN
style_designatorFLAT TOP CHAMFERED SHANK COUNTERBORED
chamfer_angle_in_deg15.0
first_counterbore_depth0.440 INCHES NOMINAL IN
first_counterbore_diameter0.437 INCHES NOMINAL IN
outside/top_flange_diameter0.940 INCHES NOMINAL IN
material_document_and_classificationMIL-STD-417 MIL STD SINGLE MATERIAL RESPONSE
NSN5340-00-221-9755
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 40725-1 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
•
OUTSIDE/TOP FLANGE DIAMETER: 0.940 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.218 INCHES NOMINAL IN
•
FIRST COUNTERBORE DEPTH: 0.440 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-STD-417 MIL STD SINGLE MATERIAL RESPONSE
•
STYLE DESIGNATOR: FLAT TOP CHAMFERED SHANK COUNTERBORED
•
CHAMFER ANGLE IN DEG: 15.0
•
FIRST COUNTERBORE DIAMETER: 0.437 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL HEIGHT0.630 INCHES NOMINAL IN
OUTSIDE/TOP FLANGE DIAMETER0.940 INCHES NOMINAL IN
HOLE DIAMETER0.218 INCHES NOMINAL IN
FIRST COUNTERBORE DEPTH0.440 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-STD-417 MIL STD SINGLE MATERIAL RESPONSE
STYLE DESIGNATORFLAT TOP CHAMFERED SHANK COUNTERBORED
CHAMFER ANGLE IN DEG15.0
FIRST COUNTERBORE DIAMETER0.437 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
2096Interchangeable
interchangeable cross-reference
interchangeable
296Interchangeable
interchangeable cross-reference
interchangeable
149-468Interchangeable
interchangeable cross-reference
interchangeable
ART2096Interchangeable
interchangeable cross-reference
interchangeable
5902Interchangeable
interchangeable cross-reference
interchangeable
2096DCInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40725-1?
40725-1 is a BUMPER.
What parts can replace 40725-1?
There are 18 known substitutes for 40725-1: 2096, 296, 149-468 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40725-1?
40725-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-221-9755. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026