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31138 — CUTTER,MILLING,METAL SLITTING

✓ Government record, cited
Nathan · ORING SEAL
PRODUCT OVERVIEW

31138: CUTTER,MILLING,METAL SLITTING.

The CUTTER,MILLING,METAL SLITTING is a Nathan industrial component. Key specifications include material: RUBBER, seat_angle: 37.0 DEGREES FIRST END, body_length: 0.265 INCHES NOMINAL IN, design_type: SINGLE CENTRALLY LOCATED HOLE, thread_class: 2A FIRST END A, body_diameter: 0.312 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-065-4835, 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
31138
NSN: 5330-00-065-4835
NIINs: 000654835, 004598349, 005524277, 010314127, 010378982, 010700433, 013602827, 016698602
FSC: 5330 — Packing and Gasket Materials
CAGE: 80201 — SKF USA INC. DBA SKF AEROSPACE SEALING SOLUTIONS (USA)
SPECIFICATIONS
materialRUBBER
seat_angle37.0 DEGREES FIRST END
body_length0.265 INCHES NOMINAL IN
design_typeSINGLE CENTRALLY LOCATED HOLE
thread_class2A FIRST END A
body_diameter0.312 INCHES NOMINAL IN
flange_height0.100 INCHES NOMINAL IN
overall_length0.365 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL PIPE SECOND END
flange_diameter0.468 INCHES NOMINAL IN
connection_styleFLARED (TUBE) FIRST END
style_designatorROUND FLANGED
NSN5330-00-065-4835
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 31138 MFR: Nathan ⚠ 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
•
TEMP RATING: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
•
SEAL WIDTH: 0.375 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: ANGULAR-OPPOSED
•
OUTSIDE DIAMETER: 4.008 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 4.003 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 3600 FEET PER MINUTE FT
•
CASE STYLE: RECESSED
•
ACCOMMODATED SHAFT DIAMETER: 3.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
TEMP RATING-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
SEAL WIDTH0.375 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR-OPPOSED
OUTSIDE DIAMETER4.008 INCHES NOMINAL IN
HOUSING BORE DIAMETER4.003 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED3600 FEET PER MINUTE FT
CASE STYLERECESSED
ACCOMMODATED SHAFT DIAMETER3.125 INCHES NOMINAL IN
SURFACE TREATMENTPLASTIC CASE
MATERIALSTEEL CASE
SUBSTITUTES & CROSS-REFERENCES 2
31139Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AT47982Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 31138?
31138 is a CUTTER,MILLING,METAL SLITTING manufactured by Nathan.
What parts can replace 31138?
There are 2 known substitutes for 31138: 31139, AT47982. Substitute compatibility should be verified for your specific system.
What is the NSN for 31138?
31138 is cataloged in the U.S. Government catalog under NSN 5330-00-065-4835. This indicates validated use in U.S. government and defense supply chains.
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