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20608-20 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

20608-20: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 OVERALL, hole_diameter: 0.266 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 2.188 INCHES NOMINAL IN, overall_length: 2.188 INCHES NOMINAL IN, aperture_diameter: 1.138 INCHES NOMINAL IN, outside_corner_radius: 0.266 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-135-9745, 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
20608-20
NSN: 5330-00-135-9745
FSC: 5330 — Packing and Gasket Materials
CAGE: 51362 — RUBBERCRAFT CORPORATION OF CALIFORNIA, LTD DBA RUBBER TECK DIVISION USE CAGE CODE 77969 FOR CATALOGING (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
hole_diameter0.266 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width2.188 INCHES NOMINAL IN
overall_length2.188 INCHES NOMINAL IN
aperture_diameter1.138 INCHES NOMINAL IN
outside_corner_radius0.266 INCHES NOMINAL IN
cross-sectional_thickness0.080 INCHES NOMINAL IN
cross-sectional_shape_styleMETAL AND SYNTHETIC RUBBER
center_to_center_distance_between_bolt_holes_along_width1.656 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
center_to_center_distance_between_bolt_holes_along_length1.656 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
NSN5330-00-135-9745
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 20608-20 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 THICKNESS: 0.080 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: METAL AND SYNTHETIC RUBBER
•
APERTURE DIAMETER: 1.138 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH: 1.656 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH: 1.656 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
OUTSIDE CORNER RADIUS: 0.266 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.080 INCHES NOMINAL IN
OVERALL LENGTH2.188 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEMETAL AND SYNTHETIC RUBBER
OVERALL WIDTH2.188 INCHES NOMINAL IN
APERTURE DIAMETER1.138 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH1.656 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH1.656 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OUTSIDE CORNER RADIUS0.266 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY 6061 OVERALL
HOLE DIAMETER0.266 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 3
VS15404-20Reference document
Same NSN cross-reference
Reference document — Secondary reference
460-0116-20Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
S7P340-20Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 20608-20?
20608-20 is a GASKET.
What parts can replace 20608-20?
There are 3 known substitutes for 20608-20: VS15404-20, 460-0116-20, S7P340-20. Substitute compatibility should be verified for your specific system.
What is the NSN for 20608-20?
20608-20 is cataloged in the U.S. Government catalog under NSN 5330-00-135-9745. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.