Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW
COVER,ENGINE POPPET VALVE ROCKER. Key specifications include material: PLASTIC SEALING ELEMENT, case_style: SQUARE, scale_name: OIL TEMPERATURE, seal_width: 0.297 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN, body_length: 1.090 INCHES MAXIMUM IN, temp_rating: 300.0 FAHRENHEIT DEGF. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-821-0817, 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
MRO→MRO_GENERAL→21494-1
NSN:5330-00-821-0817 FSC:5330 CAGE:12603 — CLARK EQUIPMENT CO (USA)
SPECIFICATIONS
material
PLASTIC SEALING ELEMENT
case_style
SQUARE
scale_name
OIL TEMPERATURE
seal_width
0.297 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
body_length
1.090 INCHES MAXIMUM IN
temp_rating
300.0 FAHRENHEIT DEGF
terminal_type
WIRE LEAD
thread_length
0.375 INCHES NOMINAL SINGLE THREADED BUSHING IN
overall_length
1.090 INCHES MAXIMUM IN
scale_quantity
1
mounting_method
THREADED BUSHING
outside_diameter
5.004 INCHES NOMINAL IN
NSN
5330-00-821-0817
COMPONENT DIAGRAM
KEY FEATURES
•
ACCOMMODATED SHAFT DIAMETER: 4.000 INCHES NOMINAL IN
•
TEMP RATING: 300.0 FAHRENHEIT DEGF
•
OUTSIDE DIAMETER: 5.004 INCHES NOMINAL IN
•
SEAL WIDTH: 0.297 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
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FREQUENTLY ASKED QUESTIONS
What is 21494-1?
21494-1 is a COVER,ENGINE POPPET VALVE ROCKER. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21494-1?
There are 20 known substitutes for 21494-1: 0314 5262, 1786074, LOCTITE MOLY DRY FILM LUBRICANT and 17 more. Substitute compatibility should be verified for your specific system.
Is 21494-1 still available?
21494-1 is currently cancelled.
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