TYPE 905 — RING,PISTON

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

TYPE 905: RING,PISTON.

The RING,PISTON is a the manufacturer industrial component. Key specifications include material: PLASTIC PHENOLIC OVERALL, ring_style: CONCENTRIC, joint_style: VERTICAL JOINT, overall_width: 0.6250 INCHES NOMINAL IN, radial_wall_thickness: 0.1270 INCHES NOMINAL IN, standard_bore_diameter: 3.745 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4310-01-165-7999, 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

TYPE 905

NSN: 4310-01-165-7999
FSC: 4310 — Compressors and Vacuum Pumps
CAGE: 5F573 — GREENE TWEED & CO INC (USA)

SPECIFICATIONS

material	PLASTIC PHENOLIC OVERALL
ring_style	CONCENTRIC
joint_style	VERTICAL JOINT
overall_width	0.6250 INCHES NOMINAL IN
radial_wall_thickness	0.1270 INCHES NOMINAL IN
standard_bore_diameter	3.745 INCHES IN
end_item_identification	155 MM HC M39,1025010266648 MM
cross-sectional_shape_style	PLAIN RECTANGULAR, STRAIGHT FACE
reference_number_differentiating_characteristics	AS DIFFERENTIATED BY BORE DIA
NSN	4310-01-165-7999

COMPONENT DIAGRAM

KEY FEATURES

•

CROSS-SECTIONAL SHAPE STYLE: PLAIN RECTANGULAR, STRAIGHT FACE

•

JOINT STYLE: VERTICAL JOINT

•

RADIAL WALL THICKNESS: 0.1270 INCHES NOMINAL IN

•

RING STYLE: CONCENTRIC

•

STANDARD BORE DIAMETER: 3.745 INCHES IN

•

MATERIAL: PLASTIC PHENOLIC OVERALL

TECHNICAL CHARACTERISTICS

OVERALL WIDTH	0.6250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLE	PLAIN RECTANGULAR, STRAIGHT FACE
JOINT STYLE	VERTICAL JOINT
RADIAL WALL THICKNESS	0.1270 INCHES NOMINAL IN
RING STYLE	CONCENTRIC
STANDARD BORE DIAMETER	3.745 INCHES IN
END ITEM IDENTIFICATION	155 MM HC M39,1025010266648 MM
MATERIAL	PLASTIC PHENOLIC OVERALL
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS	AS DIFFERENTIATED BY BORE DIA

SUBSTITUTES & CROSS-REFERENCES 1

12009020Reference document

Same NSN cross-reference

Reference document — Vendor item drawing 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 TYPE 905?

TYPE 905 is a RING,PISTON.

What parts can replace TYPE 905?

There is 1 known substitute for TYPE 905: 12009020. Substitute compatibility should be verified for your specific system.

What is the NSN for TYPE 905?

TYPE 905 is cataloged in the U.S. Government catalog under NSN 4310-01-165-7999. This indicates validated use in U.S. government and defense supply chains.

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TYPE 905 — RING,PISTON

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