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D2535-4 — D2535-4

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

D2535-4: D2535-4.

The D2535-4 is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-01-453-8555, 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
D2535-4
NSN: 5340-01-453-8555
FSC: 5340 — Hardware, Commercial
CAGE: 04729 — UNICORP. (USA)
SPECIFICATIONS
Part NumberD2535-4
NSN5340-01-453-8555
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: D2535-4 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
•
MOUNTING FACILITY QUANTITY: 2
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CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH: 4.0000 INCHES NOMINAL IN
•
MOUNTING METHOD: THREADED HOLE(S)
•
THREAD LENGTH: 0.5625 INCHES NOMINAL IN
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STYLE DESIGNATOR: RECTANGULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-200/9 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
MOUNTING FACILITY QUANTITY2
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH4.0000 INCHES NOMINAL IN
MOUNTING METHODTHREADED HOLE(S)
THREAD LENGTH0.5625 INCHES NOMINAL IN
STYLE DESIGNATORRECTANGULAR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-200/9 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH4.6250 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.1900 INCHES IN
HANDLE CLEARANCE0.8750 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 D2535-4?
D2535-4 is a D2535-4.
What is the NSN for D2535-4?
D2535-4 is cataloged in the U.S. Government catalog under NSN 5340-01-453-8555. This indicates validated use in U.S. government and defense supply chains.
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U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.