PartsTable
Technical Data Sheet
9721-5 ✓ 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 CASTER,RIGID is a the manufacturer industrial component. Key specifications include material: STEEL PLATE, wheel_type: BUILT UP, plate_style: RECTANGULAR, tread_width: 1.500 INCHES NOMINAL IN, wheel_diameter: 5.000 INCHES NOMINAL IN, effective_height: 6.250 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 5340-00-827-7607, 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
9721-5
NSN: 5340-00-827-7607
FSC: 5340
CAGE: 21672 — FKI INDUSTRIES INC DBA FAULTLESS CASTER DIVISION (USA)
SPECIFICATIONS
materialSTEEL PLATE
wheel_typeBUILT UP
plate_styleRECTANGULAR
tread_width1.500 INCHES NOMINAL IN
wheel_diameter5.000 INCHES NOMINAL IN
wheel_quantity1
effective_height6.250 INCHES NOMINAL IN
style_designatorRIGID
features_providedAXLE LUBRICATION FITTING
surface_treatmentENAMEL BODY
caster_plate_width5.000 INCHES NOMINAL IN
wheel_bearing_typeSLEEVE
NSN5340-00-827-7607
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 9721-5 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
UNPACKAGED UNIT WEIGHT: 4.500 POUNDS NOMINAL LBS
MATERIAL: RUBBER TREAD
SURFACE TREATMENT: ENAMEL PLATE
STYLE DESIGNATOR: RIGID
TECHNICAL CHARACTERISTICS (FLIS)
UNPACKAGED UNIT WEIGHT4.500 POUNDS NOMINAL LBS
MATERIALRUBBER TREAD
MATERIALSTEEL BODY
SURFACE TREATMENTENAMEL PLATE
MATERIALRUBBER WHEEL RIM
MATERIALSTEEL PLATE
SURFACE TREATMENTENAMEL BODY
STYLE DESIGNATORRIGID
WHEEL TYPEBUILT UP
PLATE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
34215Interchangeable
interchangeable cross-reference
interchangeable
650411Interchangeable
interchangeable cross-reference
interchangeable
34215REVAInterchangeable
interchangeable cross-reference
interchangeable
4270-19RInterchangeable
interchangeable cross-reference
interchangeable
4270 M5501/31A-1125Interchangeable
interchangeable cross-reference
interchangeable
54-110F-6INInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 9721-5?
9721-5 is a CASTER,RIGID.
What parts can replace 9721-5?
There are 6 known substitutes for 9721-5: 34215, 650411, 34215REVA and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 9721-5?
9721-5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-827-7607. This indicates validated use in U.S. government and defense supply chains.
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