PartsTable / COMPONENT / 520687
520687
✓ 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 PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROCARBON CLASS FPM OVERALL, hardness_rating: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL, center_hole_diameter: 4.344 INCHES MINIMUM AND 4.374 INCHES MAXIMUM IN, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN, cross-sectional_shape_style: O-RING, material_document_and_classification: AMS-7278 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-882-1690, 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
520687
NSN: 5330-00-882-1690 FSC: 5330 CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
material RUBBER FLUOROCARBON CLASS FPM OVERALL hardness_rating 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL center_hole_diameter 4.344 INCHES MINIMUM AND 4.374 INCHES MAXIMUM IN cross-sectional_height 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN cross-sectional_shape_style O-RING material_document_and_classification AMS-7278 ASSN STD SINGLE MATERIAL RESPONSE OVERALL NSN 5330-00-882-1690
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION
ID: —
CROSS-SECTION
CS: —
SPECIFICATION
Material: —
Durometer: —
Temp: —
PN: 520687
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: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
• HARDNESS RATING: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL
• CROSS-SECTIONAL SHAPE STYLE: O-RING
• MATERIAL DOCUMENT AND CLASSIFICATION: AMS-7278 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
• MATERIAL: RUBBER FLUOROCARBON CLASS FPM OVERALL
• CENTER HOLE DIAMETER: 4.344 INCHES MINIMUM AND 4.374 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN HARDNESS RATING 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL CROSS-SECTIONAL SHAPE STYLE O-RING MATERIAL DOCUMENT AND CLASSIFICATION AMS-7278 ASSN STD SINGLE MATERIAL RESPONSE OVERALL MATERIAL RUBBER FLUOROCARBON CLASS FPM OVERALL CENTER HOLE DIAMETER 4.344 INCHES MINIMUM AND 4.374 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
11245 Interchangeable interchangeable cross-reference
interchangeable
560 Interchangeable interchangeable cross-reference
interchangeable
K560 Interchangeable interchangeable cross-reference
interchangeable
K168A Interchangeable interchangeable cross-reference
interchangeable
S16001 Interchangeable interchangeable cross-reference
interchangeable
7305 Interchangeable interchangeable cross-reference
interchangeable
LIFECYCLE
Status CANCELLED
Availability —
RoHS Compliant EAR99 Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 520687?
520687 is a PACKING,PREFORMED.
What parts can replace 520687?
There are 24 known substitutes for 520687: 11245, 560, K560 and 21 more. Substitute compatibility should be verified for your specific system.
Is 520687 still available?
520687 is currently cancelled.