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PartsTable / COMPONENT / 266D1
266D1 ✓ 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 RETAINER,PACKING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, peripheral_diameter: 1.7202 INCHES NOMINAL IN, center_hole_diameter: 1.250 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN, cross-sectional_height: 0.125 INCHES NOMINAL IN, cross-sectional_thickness: 0.032 INCHES NOMINAL IN, cross-sectional_shape_style: CUP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-641-1120, 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
266D1
NSN: 5330-00-641-1120
FSC: 5330
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
peripheral_diameter1.7202 INCHES NOMINAL IN
center_hole_diameter1.250 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN
cross-sectional_height0.125 INCHES NOMINAL IN
cross-sectional_thickness0.032 INCHES NOMINAL IN
cross-sectional_shape_styleCUP
NSN5330-00-641-1120
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 266D1 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
•
MATERIAL: STEEL OVERALL
•
CROSS-SECTIONAL HEIGHT: 0.125 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.250 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: CUP
•
PERIPHERAL DIAMETER: 1.7202 INCHES NOMINAL IN
•
CROSS-SECTIONAL THICKNESS: 0.032 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
CROSS-SECTIONAL HEIGHT0.125 INCHES NOMINAL IN
CENTER HOLE DIAMETER1.250 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLECUP
PERIPHERAL DIAMETER1.7202 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.032 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
RR-C-271Interchangeable
interchangeable cross-reference
interchangeable
F271-C1-4Z10Interchangeable
interchangeable cross-reference
interchangeable
RRC271 TY 1 CL 4 GRD CInterchangeable
interchangeable cross-reference
interchangeable
2965Interchangeable
interchangeable cross-reference
interchangeable
SA 11898Interchangeable
interchangeable cross-reference
interchangeable
L0-188Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 266D1?
266D1 is a RETAINER,PACKING.
What parts can replace 266D1?
There are 19 known substitutes for 266D1: RR-C-271, F271-C1-4Z10, RRC271 TY 1 CL 4 GRD C and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 266D1?
266D1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-641-1120. 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