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Technical Data Sheet
N21009B ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: LEATHER SEALING ELEMENT, case_style: SQUARE, seal_width: 0.500 INCHES NOMINAL IN, housing_bore_diameter: 4.501 INCHES NOMINAL IN, sealing_element_style: ANGULAR, maximum_pressure_rating: 7.0 POUNDS PER SQUARE INCH (PSI) LBS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-599-5047, 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
N21009B
NSN: 5330-00-599-5047
FSC: 5330
CAGE: 81795 — ALLIANZ SWEEPER COMPANY (USA)
SPECIFICATIONS
materialLEATHER SEALING ELEMENT
case_styleSQUARE
seal_width0.500 INCHES NOMINAL IN
housing_bore_diameter4.501 INCHES NOMINAL IN
sealing_element_styleANGULAR
maximum_pressure_rating7.0 POUNDS PER SQUARE INCH (PSI) LBS
accommodated_shaft_diameter3.188 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN5330-00-599-5047
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: N21009B 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
SEAL WIDTH: 0.500 INCHES NOMINAL IN
SEALING ELEMENT STYLE: ANGULAR
CASE STYLE: SQUARE
HOUSING BORE DIAMETER: 4.501 INCHES NOMINAL IN
MAXIMUM PRESSURE RATING: 7.0 POUNDS PER SQUARE INCH (PSI) LBS
MATERIAL: LEATHER SEALING ELEMENT
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
TECHNICAL CHARACTERISTICS (FLIS)
SEAL WIDTH0.500 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR
CASE STYLESQUARE
HOUSING BORE DIAMETER4.501 INCHES NOMINAL IN
MAXIMUM PRESSURE RATING7.0 POUNDS PER SQUARE INCH (PSI) LBS
MATERIALLEATHER SEALING ELEMENT
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
MATERIALSTEEL CASE
ACCOMMODATED SHAFT DIAMETER3.188 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
55336Interchangeable
interchangeable cross-reference
interchangeable
43872Interchangeable
interchangeable cross-reference
interchangeable
765342-1Interchangeable
interchangeable cross-reference
interchangeable
PEI 7282Interchangeable
interchangeable cross-reference
interchangeable
200757Interchangeable
interchangeable cross-reference
interchangeable
G1027Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N21009B?
N21009B is a SEAL,PLAIN ENCASED.
What parts can replace N21009B?
There are 18 known substitutes for N21009B: 55336, 43872, 765342-1 and 15 more. Substitute compatibility should be verified for your specific system.
Is N21009B still available?
N21009B is currently cancelled.
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