H18-540 — RING,PISTON

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

H18-540: RING,PISTON.

The RING,PISTON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, ring_style: CONCENTRIC, joint_style: VERTICAL JOINT, overall_width: 0.1250 INCHES NOMINAL IN, radial_wall_thickness: 0.1120 INCHES NOMINAL IN, standard_bore_diameter: 2.500 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4310-00-331-2157, 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

H18-540

NSN: 4310-00-331-2157
FSC: 4310 — Compressors and Vacuum Pumps
CAGE: 35301 — DRESSER INDUSTRIES INC LEROI DIV (USA)

SPECIFICATIONS

material	STEEL OVERALL
ring_style	CONCENTRIC
joint_style	VERTICAL JOINT
overall_width	0.1250 INCHES NOMINAL IN
radial_wall_thickness	0.1120 INCHES NOMINAL IN
standard_bore_diameter	2.500 INCHES IN
cross-sectional_shape_style	PLAIN RECTANGULAR, STRAIGHT FACE
NSN	4310-00-331-2157

COMPONENT DIAGRAM

KEY FEATURES

•

CROSS-SECTIONAL SHAPE STYLE: PLAIN RECTANGULAR, STRAIGHT FACE

•

JOINT STYLE: VERTICAL JOINT

•

RADIAL WALL THICKNESS: 0.1120 INCHES NOMINAL IN

•

RING STYLE: CONCENTRIC

•

STANDARD BORE DIAMETER: 2.500 INCHES IN

•

MATERIAL: STEEL OVERALL

TECHNICAL CHARACTERISTICS

OVERALL WIDTH	0.1250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLE	PLAIN RECTANGULAR, STRAIGHT FACE
JOINT STYLE	VERTICAL JOINT
RADIAL WALL THICKNESS	0.1120 INCHES NOMINAL IN
RING STYLE	CONCENTRIC
STANDARD BORE DIAMETER	2.500 INCHES IN
MATERIAL	STEEL OVERALL

SUBSTITUTES & CROSS-REFERENCES 1

903511Reference document

Same NSN cross-reference

Reference document — Secondary reference

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 H18-540?

H18-540 is a RING,PISTON.

What parts can replace H18-540?

There is 1 known substitute for H18-540: 903511. Substitute compatibility should be verified for your specific system.

What is the NSN for H18-540?

H18-540 is cataloged in the U.S. Government catalog under NSN 4310-00-331-2157. This indicates validated use in U.S. government and defense supply chains.

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