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21086-7271 — SEAL,PLAIN ENCASED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

21086-7271: SEAL,PLAIN ENCASED.

The SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL, case_style: SQUARE, seal_width: 0.472 INCHES NOMINAL IN, temp_rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF, hardness_rating: 80.0 SHORE DUROMETER A NOMINAL OVERALL, housing_bore_diameter: 5.512 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-477-8495, 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
21086-7271
NSN: 5330-01-477-8495
FSC: 5330 — Packing and Gasket Materials
CAGE: 73680 — GARLOCK SEALING TECHNOLOGIES LLC DBA GARLOCK SEALING TECHNOLOGIES LLC (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
case_styleSQUARE
seal_width0.472 INCHES NOMINAL IN
temp_rating-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF
hardness_rating80.0 SHORE DUROMETER A NOMINAL OVERALL
housing_bore_diameter5.512 INCHES NOMINAL IN
sealing_element_styleANGULAR
maximum_pressure_rating7.0 POUNDS PER SQUARE INCH (PSI) LBS
accommodated_shaft_diameter4.528 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed3000 FEET PER MINUTE FT
NSN5330-01-477-8495
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21086-7271 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: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF
•
SEAL WIDTH: 0.472 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: ANGULAR
•
MAXIMUM PRESSURE RATING: 7.0 POUNDS PER SQUARE INCH (PSI) LBS
•
HARDNESS RATING: 80.0 SHORE DUROMETER A NOMINAL OVERALL
•
HOUSING BORE DIAMETER: 5.512 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 3000 FEET PER MINUTE FT
•
CASE STYLE: SQUARE
TECHNICAL CHARACTERISTICS
TEMP RATING-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF
SEAL WIDTH0.472 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR
MAXIMUM PRESSURE RATING7.0 POUNDS PER SQUARE INCH (PSI) LBS
HARDNESS RATING80.0 SHORE DUROMETER A NOMINAL OVERALL
HOUSING BORE DIAMETER5.512 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED3000 FEET PER MINUTE FT
CASE STYLESQUARE
COLORBLACK
ACCOMMODATED SHAFT DIAMETER4.528 INCHES NOMINAL 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

No substitute or cross-reference records for this part.

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 21086-7271?
21086-7271 is a SEAL,PLAIN ENCASED.
What is the NSN for 21086-7271?
21086-7271 is cataloged in the U.S. Government catalog under NSN 5330-01-477-8495. 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.