PartsTable
Technical Data Sheet
Download PDF

C20526-1 — SEAL,PLAIN ENCASED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

C20526-1: SEAL,PLAIN ENCASED.

The SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 CASE, case_style: SQUARE, seal_width: 0.982 INCHES NOMINAL IN, temp_rating: -55.0 CELSIUS AND 125.0 CELSIUS DEGC, surface_treatment: ANODIZE CASE, sealing_element_style: VERTICAL. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-387-5345, 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
C20526-1
NSN: 5330-01-387-5345
FSC: 5330 — Packing and Gasket Materials
CAGE: 81755 — LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN AERONAUTICS COMPANY (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 CASE
case_styleSQUARE
seal_width0.982 INCHES NOMINAL IN
temp_rating-55.0 CELSIUS AND 125.0 CELSIUS DEGC
surface_treatmentANODIZE CASE
sealing_element_styleVERTICAL
accommodated_shaft_diameter0.055 INCHES NOMINAL IN
NSN5330-01-387-5345
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: C20526-1 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: -55.0 CELSIUS AND 125.0 CELSIUS DEGC
•
SEAL WIDTH: 0.982 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: VERTICAL
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 0.055 INCHES NOMINAL IN
•
SURFACE TREATMENT: ANODIZE CASE
•
MATERIAL: RUBBER SILICONE CLASS Q SEALING ELEMENT
TECHNICAL CHARACTERISTICS
TEMP RATING-55.0 CELSIUS AND 125.0 CELSIUS DEGC
SEAL WIDTH0.982 INCHES NOMINAL IN
SEALING ELEMENT STYLEVERTICAL
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER0.055 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE CASE
MATERIALRUBBER SILICONE CLASS Q SEALING ELEMENT
MATERIALALUMINUM ALLOY 6061 CASE
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy C20526-1?
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 C20526-1?
C20526-1 is a SEAL,PLAIN ENCASED.
What is the NSN for C20526-1?
C20526-1 is cataloged in the U.S. Government catalog under NSN 5330-01-387-5345. 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 — C20526-1

✓ 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.