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Technical Data Sheet
PartsTable / COMPONENT / D-26
D-26 ✓ 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 DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: COPPER OVERALL, hole_diameter: 0.171 INCHES NOMINAL IN, overall_width: 0.470 INCHES IN, overall_length: 1.240 INCHES IN, outside_diameter: 3.145 INCHES NOMINAL IN, style_designator: FLAT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-146-4761, 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
D-26
NSN: 5330-00-146-4761
FSC: 5330
CAGE: 93235 — TURBODYNE DIV OF DRESSER INDUSTRIES INC SEE CODE 0BR59 (USA)
SPECIFICATIONS
materialCOPPER OVERALL
hole_diameter0.171 INCHES NOMINAL IN
overall_width0.470 INCHES IN
overall_length1.240 INCHES IN
outside_diameter3.145 INCHES NOMINAL IN
style_designatorFLAT
basic_shape_styleCRIMP
surface_treatmentTIN OVERALL SINGLE LAYER
bolt_hole_quantity8
material_thickness0.060 INCHES IN
peripheral_diameter1.375 INCHES NOMINAL IN
bolt_circle_diameter2.472 INCHES NOMINAL IN
NSN5330-00-146-4761
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: D-26 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
•
CENTER HOLE DIAMETER: 0.656 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.562 INCHES NOMINAL IN
•
FLANGED BODY OUTSIDE DIAMETER: 1.109 INCHES NOMINAL IN
•
PERIPHERAL DIAMETER: 1.375 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER0.656 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.562 INCHES NOMINAL IN
FLANGED BODY OUTSIDE DIAMETER1.109 INCHES NOMINAL IN
PERIPHERAL DIAMETER1.375 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
D-26Interchangeable
interchangeable cross-reference
interchangeable
4820PL1257469Interchangeable
interchangeable cross-reference
interchangeable
C7548Interchangeable
interchangeable cross-reference
interchangeable
7317Interchangeable
interchangeable cross-reference
interchangeable
C31510Interchangeable
interchangeable cross-reference
interchangeable
1632PInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D-26?
D-26 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace D-26?
There are 8 known substitutes for D-26: D-26, 4820PL1257469, C7548 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D-26?
D-26 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-146-4761. 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