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3746 — SEAL,PLAIN

✓ Government record, cited
Zyxel · ORING SEAL
PRODUCT OVERVIEW

3746: SEAL,PLAIN.

The SEAL,PLAIN is a Zyxel industrial component. Key specifications include outside_diameter: 70.0 MILLIMETERS NOMINAL MM, special_features: STEEL, peripheral_diameter: 10.0 MILLIMETERS NOMINAL MM, center_hole_diameter: 50.0 MILLIMETERS NOMINAL MM, part_name_assigned_by_controlling_agency: O-RING. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-298-0544, 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
3746
NSN: 5330-00-298-0544
NIINs: 002980544, 012271692, 013811431, 016860709
FSC: 5330 — Packing and Gasket Materials
CAGE: 75165 — JOHNS MANVILLE INTL (USA)
SPECIFICATIONS
outside_diameter70.0 MILLIMETERS NOMINAL MM
special_featuresSTEEL
peripheral_diameter10.0 MILLIMETERS NOMINAL MM
center_hole_diameter50.0 MILLIMETERS NOMINAL MM
part_name_assigned_by_controlling_agencyO-RING
NSN5330-00-298-0544
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3746 MFR: Zyxel ⚠ 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: 0.438 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 2.750 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SINGLE LIP
•
ACCOMMODATED SHAFT DIAMETER: 1.875 INCHES NOMINAL IN
•
MATERIAL: STEEL SPRING
•
CONSTRUCTION: SOLID
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.438 INCHES NOMINAL IN
HOUSING BORE DIAMETER2.750 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESINGLE LIP
ACCOMMODATED SHAFT DIAMETER1.875 INCHES NOMINAL IN
MATERIALSTEEL SPRING
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
CONSTRUCTIONSOLID
SUBSTITUTES & CROSS-REFERENCES 1
S287-1020PT26ISSUE13Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3746?
3746 is a SEAL,PLAIN manufactured by Zyxel.
What parts can replace 3746?
There is 1 known substitute for 3746: S287-1020PT26ISSUE13. Substitute compatibility should be verified for your specific system.
What is the NSN for 3746?
3746 is cataloged in the U.S. Government catalog under NSN 5330-00-298-0544. This indicates validated use in U.S. government and defense supply chains.
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