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Technical Data Sheet
1-21-812 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The FILTER,BAND PASS is a the manufacturer industrial component. Key specifications include material: STEEL OUTER LAYER, body_width: 2.000 INCHES MINIMUM AND 2.124 INCHES MAXIMUM IN, seal_width: 0.375 INCHES NOMINAL IN, body_height: 2.437 INCHES MINIMUM AND 2.624 INCHES MAXIMUM IN, body_length: 2.813 INCHES MINIMUM AND 3.063 INCHES MAXIMUM IN, temp_rating: -40.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-239-0507, 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
MRO MRO_GENERAL 1-21-812
NSN: 5330-00-239-0507
FSC: 5330
CAGE: 8E499 — KOEHRING CRANES AND EXCAVATORS INC SUB OF NORTHWEST ENGINEERING CO (USA)
SPECIFICATIONS
materialSTEEL OUTER LAYER
body_width2.000 INCHES MINIMUM AND 2.124 INCHES MAXIMUM IN
seal_width0.375 INCHES NOMINAL IN
body_height2.437 INCHES MINIMUM AND 2.624 INCHES MAXIMUM IN
body_length2.813 INCHES MINIMUM AND 3.063 INCHES MAXIMUM IN
temp_rating-40.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
constructionSOLID
corner_shapeSQUARE ALL CORNERS
body_materialMETAL
end_similarityNOT IDENTICAL
inclosure_typeHERMETICALLY SEALED
overall_height3.187 INCHES NOMINAL IN
NSN5330-00-239-0507
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1-21-812 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: 0.375 INCHES NOMINAL IN
MATERIAL: RUBBER SYNTHETIC SEALING ELEMENT
TEMP RATING: -40.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
HOUSING BORE DIAMETER: 3.750 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLE: SINGLE LIP
CONSTRUCTION: SOLID
ACCOMMODATED SHAFT DIAMETER: 3.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SEAL WIDTH0.375 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
TEMP RATING-40.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
HOUSING BORE DIAMETER3.750 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESINGLE LIP
CONSTRUCTIONSOLID
ACCOMMODATED SHAFT DIAMETER3.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
V106Interchangeable
interchangeable cross-reference
interchangeable
HC4850-12Interchangeable
interchangeable cross-reference
interchangeable
1218-12Interchangeable
interchangeable cross-reference
interchangeable
S8541Interchangeable
interchangeable cross-reference
interchangeable
5AE30RITY1Interchangeable
interchangeable cross-reference
interchangeable
30R6-3-8-IN.Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1-21-812?
1-21-812 is a FILTER,BAND PASS. It is classified as a MRO (MRO_GENERAL).
What parts can replace 1-21-812?
There are 12 known substitutes for 1-21-812: V106, HC4850-12, 1218-12 and 9 more. Substitute compatibility should be verified for your specific system.
Is 1-21-812 still available?
1-21-812 is currently cancelled.
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