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28-1785PK — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

28-1785PK: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: RUBBER POLYISOPRENE SYNTHETIC CLASS IR OR COTTON OR RUBBER POLYISOPRENE NATURAL CLASS NR AND COTTON OVERALL, temp_rating: 250.0 FAHRENHEIT DEGF, hole_diameter: 0.562 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, outside_diameter: 11.250 INCHES NOMINAL IN, special_features: WITH ONE AND ONE HALF WEBS 0.500 IN. W IN, style_designator: CIRCULAR.

This part is cataloged in the U.S. Government catalog under NSN 5330-00-468-9671, 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
28-1785PK
NSN: 5330-00-468-9671
FSC: 5330 — Packing and Gasket Materials
CAGE: 66935 — JOHNSON CONTROLS NAVY SYSTEMS, LLC (USA)
SPECIFICATIONS
materialRUBBER POLYISOPRENE SYNTHETIC CLASS IR OR COTTON OR RUBBER POLYISOPRENE NATURAL CLASS NR AND COTTON OVERALL
temp_rating250.0 FAHRENHEIT DEGF
hole_diameter0.562 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
outside_diameter11.250 INCHES NOMINAL IN
special_featuresWITH ONE AND ONE HALF WEBS 0.500 IN. W IN
style_designatorCIRCULAR
aperture_diameter8.000 INCHES NOMINAL IN
bolt_hole_quantity14
bolt_circle_diameter10.125 INCHES NOMINAL IN
cross-sectional_thickness0.125 INCHES NOMINAL IN
cross-sectional_shape_styleCLOTH AND SYNTHETIC RUBBER, NONMETALLIC MATERIAL
material_document_and_classificationHH-P-151,CL 1 FED SPEC ALL MATERIAL RESPONSES OVERALL
NSN5330-00-468-9671
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 28-1785PK 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
•
TEMP RATING: 250.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL THICKNESS: 0.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: HH-P-151,CL 1 FED SPEC ALL MATERIAL RESPONSES OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: CLOTH AND SYNTHETIC RUBBER, NONMETALLIC MATERIAL
•
OUTSIDE DIAMETER: 11.250 INCHES NOMINAL IN
•
APERTURE DIAMETER: 8.000 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 14
TECHNICAL CHARACTERISTICS
TEMP RATING250.0 FAHRENHEIT DEGF
CROSS-SECTIONAL THICKNESS0.125 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONHH-P-151,CL 1 FED SPEC ALL MATERIAL RESPONSES OVERALL
CROSS-SECTIONAL SHAPE STYLECLOTH AND SYNTHETIC RUBBER, NONMETALLIC MATERIAL
OUTSIDE DIAMETER11.250 INCHES NOMINAL IN
APERTURE DIAMETER8.000 INCHES NOMINAL IN
BOLT HOLE QUANTITY14
BOLT CIRCLE DIAMETER10.125 INCHES NOMINAL IN
SPECIAL FEATURESWITH ONE AND ONE HALF WEBS 0.500 IN. W IN
SUBSTITUTES & CROSS-REFERENCES 1
01437Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 28-1785PK?
28-1785PK is a GASKET.
What parts can replace 28-1785PK?
There is 1 known substitute for 28-1785PK: 01437. Substitute compatibility should be verified for your specific system.
What is the NSN for 28-1785PK?
28-1785PK is cataloged in the U.S. Government catalog under NSN 5330-00-468-9671. This indicates validated use in U.S. government and defense supply chains.
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