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R1521 — PACKING MATERIAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

R1521: PACKING MATERIAL.

The PACKING MATERIAL is a the manufacturer industrial component. Key specifications include length: 57.000 INCHES NOMINAL IN, material: HEMP, fabrication_method: BRAIDED, cross-sectional_width: 0.750 INCHES NOMINAL IN, cross-sectional_height: 0.750 INCHES NOMINAL IN, cross-sectional_shape_style: SQUARE. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-164-8489, 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
R1521
NSN: 5330-00-164-8489
FSC: 5330 — Packing and Gasket Materials
CAGE: 51805 — ROSCO MFG CO (USA)
SPECIFICATIONS
length57.000 INCHES NOMINAL IN
materialHEMP
fabrication_methodBRAIDED
cross-sectional_width0.750 INCHES NOMINAL IN
cross-sectional_height0.750 INCHES NOMINAL IN
cross-sectional_shape_styleSQUARE
NSN5330-00-164-8489
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: R1521 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
•
LENGTH: 57.000 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.750 INCHES NOMINAL IN
•
CROSS-SECTIONAL WIDTH: 0.750 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE
•
MATERIAL: HEMP
•
FABRICATION METHOD: BRAIDED
TECHNICAL CHARACTERISTICS
LENGTH57.000 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.750 INCHES NOMINAL IN
CROSS-SECTIONAL WIDTH0.750 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESQUARE
MATERIALHEMP
FABRICATION METHODBRAIDED
SUBSTITUTES & CROSS-REFERENCES 1
1521Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 R1521?
R1521 is a PACKING MATERIAL.
What parts can replace R1521?
There is 1 known substitute for R1521: 1521. Substitute compatibility should be verified for your specific system.
What is the NSN for R1521?
R1521 is cataloged in the U.S. Government catalog under NSN 5330-00-164-8489. This indicates validated use in U.S. government and defense supply chains.
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