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520220-2 — RING,PISTON

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

520220-2: RING,PISTON.

The RING,PISTON is a the manufacturer industrial component. Key specifications include special_features: ESSENTIAL TO WEAPON SYSTEM PERFORMANCE OR OPERATION, OR THE PRESERVATION OF LIFE OR SAFETY OF OPERATING PERSONNEL, end_item_identification: AIR LAUNCH AND RECOVERY EQUIP, criticality_code_justification: FEAT. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-151-4398, 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
520220-2
NSN: 5330-00-151-4398
NIINs: 001514398, 014462269
FSC: 5330 — Packing and Gasket Materials
CAGE: 80020 — NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION JOINT BASE JBMDL (USA)
SPECIFICATIONS
special_featuresESSENTIAL TO WEAPON SYSTEM PERFORMANCE OR OPERATION, OR THE PRESERVATION OF LIFE OR SAFETY OF OPERATING PERSONNEL
end_item_identificationAIR LAUNCH AND RECOVERY EQUIP
criticality_code_justificationFEAT
NSN5330-00-151-4398
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 520220-2 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
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONARRESTING GEAR BARRIER M21
SUBSTITUTES & CROSS-REFERENCES 2
511485-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
B13336Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 520220-2?
520220-2 is a RING,PISTON.
What parts can replace 520220-2?
There are 2 known substitutes for 520220-2: 511485-2, B13336. Substitute compatibility should be verified for your specific system.
What is the NSN for 520220-2?
520220-2 is cataloged in the U.S. Government catalog under NSN 5330-00-151-4398. This indicates validated use in U.S. government and defense supply chains.
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