PartsTable
Technical Data Sheet
Download PDF

20303-1070 — RETAINER,HELICAL COMPRESSION SPR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

20303-1070: RETAINER,HELICAL COMPRESSION SPR.

RETAINER,HELICAL COMPRESSION SPR. Key specifications include material: ALUMINUM ALLOY, lip_thickness: 0.250 INCHES NOMINAL IN, overall_height: 1.550 INCHES NOMINAL IN, flange_diameter: 2.312 INCHES NOMINAL IN, flange_thickness: 0.125 INCHES NOMINAL IN, style_designator: IRREGULAR. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-108-0759, 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
20303-1070
NSN: 5340-01-108-0759
FSC: 5340 — Hardware, Commercial
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
lip_thickness0.250 INCHES NOMINAL IN
overall_height1.550 INCHES NOMINAL IN
flange_diameter2.312 INCHES NOMINAL IN
flange_thickness0.125 INCHES NOMINAL IN
style_designatorIRREGULAR
end_hole_diameter0.625 INCHES NOMINAL IN
surface_treatmentANODIZE
body_inside_diameter1.250 INCHES NOMINAL IN
body_outside_diameter1.750 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
NSN5340-01-108-0759
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 20303-1070 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
•
FLANGE DIAMETER: 2.312 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.125 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 1.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: IRREGULAR
•
BODY INSIDE DIAMETER: 1.250 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
LIP THICKNESS: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER2.312 INCHES NOMINAL IN
OVERALL HEIGHT1.550 INCHES NOMINAL IN
FLANGE THICKNESS0.125 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.750 INCHES NOMINAL IN
STYLE DESIGNATORIRREGULAR
BODY INSIDE DIAMETER1.250 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
LIP THICKNESS0.250 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE
MATERIALALUMINUM ALLOY
SUBSTITUTES & CROSS-REFERENCES 2
20303-001 FIND 18Reference document
Same NSN cross-reference
Reference document — Secondary reference
20303-001Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 20303-1070?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 20303-1070?
20303-1070 is a RETAINER,HELICAL COMPRESSION SPR.
What parts can replace 20303-1070?
There are 2 known substitutes for 20303-1070: 20303-001 FIND 18, 20303-001. Substitute compatibility should be verified for your specific system.
What is the NSN for 20303-1070?
20303-1070 is cataloged in the U.S. Government catalog under NSN 5340-01-108-0759. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 20303-1070

✓ 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.