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PartsTable / COMPONENT / 33728
33728 ✓ 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 TRANSFORMER,DISCRIMINATOR is a the manufacturer industrial component. Key specifications include material: PAPER, body_width: 2.813 INCHES NOMINAL IN, case_style: SQUARE, seal_width: 0.469 INCHES NOMINAL IN, body_height: 3.250 INCHES NOMINAL IN, body_length: 2.312 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-154-4952, 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
33728
NSN: 5330-00-154-4952
FSC: 5330
CAGE: 80201 — SKF USA INC. DBA SKF AEROSPACE SEALING SOLUTIONS (USA)
SPECIFICATIONS
materialPAPER
body_width2.813 INCHES NOMINAL IN
case_styleSQUARE
seal_width0.469 INCHES NOMINAL IN
body_height3.250 INCHES NOMINAL IN
body_length2.312 INCHES NOMINAL IN
usage_designFOR DETERMINING RELATIVE SENSITIVITY OF MICROORGANISMS FOR SUSCEPTIBILITY TO PENICILLIN G
inclosure_typeFULLY INCLOSED
mounting_methodPLUG-IN SINGLE GROUP
frequency_rating2.89 KILOHERTZ MAXIMUM SINGLE COMPONENT
outside_diameter3.376 INCHES NOMINAL IN
special_featuresEACH CARTRIDGE CONTAINS 50 DISCS; THERE ARE 5 CARTRIDGES PER PACKAGE; TOTAL OF 250 DISCS
NSN5330-00-154-4952
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 33728 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
•
SEALING ELEMENT STYLE: ANGULAR
•
MATERIAL: STEEL CASE
•
SURFACE TREATMENT: PLASTIC CASE
•
SEAL WIDTH: 0.469 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT DIAMETER: 2.250 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
OUTSIDE DIAMETER: 3.376 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SEALING ELEMENT STYLEANGULAR
MATERIALSTEEL CASE
SURFACE TREATMENTPLASTIC CASE
SEAL WIDTH0.469 INCHES NOMINAL IN
ACCOMMODATED SHAFT DIAMETER2.250 INCHES NOMINAL IN
MATERIALLEATHER SEALING ELEMENT
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
OUTSIDE DIAMETER3.376 INCHES NOMINAL IN
CASE STYLESQUARE
HOUSING BORE DIAMETER3.371 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
670939C2Interchangeable
interchangeable cross-reference
interchangeable
760-1211Interchangeable
interchangeable cross-reference
interchangeable
50-5-8Interchangeable
interchangeable cross-reference
interchangeable
225-5-8Interchangeable
interchangeable cross-reference
interchangeable
00725665470493Interchangeable
interchangeable cross-reference
interchangeable
BSF-20Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 33728?
33728 is a TRANSFORMER,DISCRIMINATOR.
What parts can replace 33728?
There are 23 known substitutes for 33728: 670939C2, 760-1211, 50-5-8 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 33728?
33728 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-154-4952. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026