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26591-2 — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

26591-2: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, rim_surface_width: 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, peripheral_diameter: 0.795 INCHES MINIMUM AND 0.805 INCHES MAXIMUM IN, center_hole_diameter: 0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN, cross-sectional_height: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, cross-sectional_shape_style: SPECIAL. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-940-8425, 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
26591-2
NSN: 5330-00-940-8425
FSC: 5330 — Packing and Gasket Materials
CAGE: 81412 — TREADWELL CORPORATION (DELAWARE) DBA TREADWELL CORP (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
rim_surface_width0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
peripheral_diameter0.795 INCHES MINIMUM AND 0.805 INCHES MAXIMUM IN
center_hole_diameter0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
cross-sectional_height0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
cross-sectional_shape_styleSPECIAL
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
NSN5330-00-940-8425
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 26591-2 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
•
CROSS-SECTIONAL HEIGHT: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
RIM SURFACE WIDTH: 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: SPECIAL
•
PERIPHERAL DIAMETER: 0.795 INCHES MINIMUM AND 0.805 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
CRITICALITY CODE JUSTIFICATIONZZZY
RIM SURFACE WIDTH0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLESPECIAL
PERIPHERAL DIAMETER0.795 INCHES MINIMUM AND 0.805 INCHES MAXIMUM IN
CENTER HOLE DIAMETER0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
SUBSTITUTES & CROSS-REFERENCES 2
26591-1CPReference document
Same NSN cross-reference
Reference document — Secondary reference
26591-1Reference 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 26591-2?
26591-2 is a PACKING,PREFORMED.
What parts can replace 26591-2?
There are 2 known substitutes for 26591-2: 26591-1CP, 26591-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 26591-2?
26591-2 is cataloged in the U.S. Government catalog under NSN 5330-00-940-8425. This indicates validated use in U.S. government and defense supply chains.
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