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7R53 — PLUNGER,DETENT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

7R53: PLUNGER,DETENT.

The PLUNGER,DETENT is a the manufacturer industrial component. Key specifications include length: 1.180 INCHES MINIMUM AND 1.185 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN, diameter: 0.562 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, material: STEEL OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-157-5225, 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
7R53
NSN: 5340-00-157-5225
FSC: 5340 — Hardware, Commercial
CAGE: K3743 — BAE SYSTEMS GLOBAL COMBAT SYSTEMS LIMITED (GBR)
SPECIFICATIONS
length1.180 INCHES MINIMUM AND 1.185 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
diameter0.562 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
materialSTEEL OVERALL
NSN5340-00-157-5225
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7R53 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
•
LENGTH: 1.180 INCHES MINIMUM AND 1.185 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
•
DIAMETER: 0.562 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
LENGTH1.180 INCHES MINIMUM AND 1.185 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
DIAMETER0.562 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
MATERIALSTEEL OVERALL
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 2
D5E9143-161Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
7R9640012Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 7R53?
7R53 is a PLUNGER,DETENT.
What parts can replace 7R53?
There are 2 known substitutes for 7R53: D5E9143-161, 7R9640012. Substitute compatibility should be verified for your specific system.
What is the NSN for 7R53?
7R53 is cataloged in the U.S. Government catalog under NSN 5340-00-157-5225. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.