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Technical Data Sheet
PartsTable / COMPONENT / PTT20
PTT20 ✓ 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 STRAP,RETAINING is a the manufacturer industrial component. Key specifications include cushion: NOT INCLUDED, material: STEEL LOCATION NOT OTHERWISE SPECIFIED, mounting_pad: NOT INCLUDED, overall_width: 0.875 INCHES NOMINAL IN, overall_length: 3.125 INCHES NOMINAL IN, style_designator: CURVED ARCH. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-190-6805, 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
PTT20
NSN: 5340-00-190-6805
FSC: 5340
CAGE: 72629 — GENERAL CABLE CO DIV OF GK TECHNOLOGIES INC DIAMOND EXPANSION BOLT CO DIV (USA)
SPECIFICATIONS
cushionNOT INCLUDED
materialSTEEL LOCATION NOT OTHERWISE SPECIFIED
mounting_padNOT INCLUDED
overall_width0.875 INCHES NOMINAL IN
overall_length3.125 INCHES NOMINAL IN
style_designatorCURVED ARCH
surface_treatmentZINC
material_thickness0.125 INCHES NOMINAL IN
mounting_hole_size0.281 INCHES NOMINAL IN
inside_diameter/arch_length1.315 INCHES NOMINAL IN
distance_between_mounting_hole_centers2.375 INCHES NOMINAL IN
distance_between_base_and_inside_of_arch1.315 INCHES NOMINAL IN
NSN5340-00-190-6805
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: PTT20 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 LOCATION NOT OTHERWISE SPECIFIED
•
STYLE DESIGNATOR: CURVED ARCH
•
SURFACE TREATMENT: ZINC
•
INSIDE DIAMETER/ARCH LENGTH: 1.315 INCHES NOMINAL IN
•
DISTANCE BETWEEN MOUNTING HOLE CENTERS: 2.375 INCHES NOMINAL IN
•
CUSHION: NOT INCLUDED
•
MOUNTING HOLE SIZE: 0.281 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH3.125 INCHES NOMINAL IN
MATERIALSTEEL LOCATION NOT OTHERWISE SPECIFIED
STYLE DESIGNATORCURVED ARCH
SURFACE TREATMENTZINC
INSIDE DIAMETER/ARCH LENGTH1.315 INCHES NOMINAL IN
DISTANCE BETWEEN MOUNTING HOLE CENTERS2.375 INCHES NOMINAL IN
CUSHIONNOT INCLUDED
MOUNTING HOLE SIZE0.281 INCHES NOMINAL IN
MATERIAL THICKNESS0.125 INCHES NOMINAL IN
OVERALL WIDTH0.875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
FF-S-760Upgraded Successor
successor cross-reference
successor
167A33Upgraded Successor
successor cross-reference
successor
NASM760-TYP1, STYB, 5/16Upgraded Successor
successor cross-reference
successor
PTMC75Upgraded Successor
successor cross-reference
successor
NASM760Upgraded Successor
successor cross-reference
successor
MS35140-16Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PTT20?
PTT20 is a STRAP,RETAINING.
What parts can replace PTT20?
There are 21 known substitutes for PTT20: FF-S-760, 167A33, NASM760-TYP1, STYB, 5/16 and 18 more. Substitute compatibility should be verified for your specific system.
Is PTT20 still available?
PTT20 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026