Flat Free / Pneumatic / Semi-Penumatic Wheels

This collection holds Flat Free Pneumatic Semi Penumatic Wheels with pneumatic, polyurethane and rubber treads, made to replace worn wheels on carts, dollies, racks, and equipment. Wheels in this collection range from 250 to 550 lb per wheel. Wheels in this category range from 6 up to 10 inches in diameter with 2 to 3-1/2 in tread widths. Flanged and V groove track wheels ride on rail or angle iron track for straight line travel. Air filled and flat free tires cushion the load and roll over gravel, grass, cracks, and debris. Polyurethane (poly or urethane) treads are quiet, floor safe, and resist water and many chemicals. Rubber wheels are quiet, cushion the load, and protect floors. Soft rubber or TPR is the better pick when the floor has chips or grit. Match the bore, hub length, diameter, and tread width before you order. Order the axle and spacers if the old ones are worn. Pneumatic aisle: pneumatic casters. Caster hub: heavy duty casters.

Shop by wheel type

3 types

Wheel = wheel diameter · capacity is per wheel.

TieredPricing

Durastar 6" x 2" Flat-Free Offset Hub Wheel, 250 lbs Capacity and 1/2" Flanged Ball Bearing Durastar

Ships in 1-3 Business Days

6" x 2" Polyurethane Foam Flat-Free Industrial Replacement Wheel – 250 lb

Part # 620-FF-44L-138F

from $35.00

Volume pricing available

Polyurethane

Load rating

250 lbs

Size6" x 2"

Capacity250 lbs

MaterialPolyurethane

Core—

More Details Less Details

Width 2"

Temp Range -40°F to 160°F

Quick-fit wheel specs for replacement and procurement teams.

TieredPricing

Durastar 10" (410/350-4) x 3-1/2" Flat-Free Offset Hub Wheel, 300 lbs Capacity and 1/2" Flanged Ball Bearing Durastar

Ships in 1-3 Business Days

10" x 3-1/2" Polyurethane Foam Flat-Free Wheel – 300 lb

Part # 1035-FF-45BS-F

$60.00

Volume pricing available

Polyurethane

Load rating

300 lbs

Size10" x 3-1/2"

Capacity300 lbs

MaterialPolyurethane

Core—

More Details Less Details

Width 3-1/2"

Temp Range -40°F to 160°F

Quick-fit wheel specs for replacement and procurement teams.

TieredPricing

Durastar 8" (280/250-4) x 3" Pneumatic Wheel, 250 lbs Capacity and 1/2" Flanged Ball Bearing Durastar

Ships in 1-3 Business Days

8" x 3" Pneumatic Rubber Wheel – 250 lb

Part # 830-FP-44B1JT-1C

$56.00

Volume pricing available

Rubber

Load rating

250 lbs

Size8" x 3"

Capacity250 lbs

MaterialRubber

Core—

More Details Less Details

Width 3"

Temp Range -40°F to 160°F

Quick-fit wheel specs for replacement and procurement teams.

TieredPricing

Durastar 8" (280/250-4) x 3" Flat-Free Wheel, 275 lbs Capacity and 1/2" Flanged Ball Bearing Durastar

Ships in 1-3 Business Days

8" x 3" Polyurethane Flat-Free Industrial Replacement Wheel – 275 lb

Part # 830-FF-44BL-C

$48.00

Volume pricing available

Solid Polyurethane

Load rating

275 lbs

Size8" x 3"

Capacity275 lbs

MaterialSolid Polyurethane

Core—

More Details Less Details

Width 3"

Temp Range -40°F to 160°F

Quick-fit wheel specs for replacement and procurement teams.

TieredPricing

Durastar 10" (410/350-4) x 3-1/2" Pneumatic Offset Hub Wheel, 300 lbs Capacity and 5/8" Flanged Ball Bearing Durastar

Ships in 1-3 Business Days

10" x 3-1/2" Pneumatic Industrial Replacement Wheel – 300 lb · Model 1035-FP-45BS-F

Part # 1035-FP-45BS-F

$71.00

Volume pricing available

Load rating

300 lbs

Size10" x 3-1/2"

Capacity300 lbs

Material—

Core—

More Details Less Details

Width 3-1/2"

Temp Range -40°F to 160°F

Quick-fit wheel specs for replacement and procurement teams.

TieredPricing

Durastar 10" (410/350-4) x 3-1/2" Pneumatic Wheel, 300 lbs Capacity and 1/2" Flanged Ball Bearing Durastar

Ships in 1-3 Business Days

10" x 3-1/2" Pneumatic Industrial Replacement Wheel – 300 lb · Model 1035-FP-44BS-3C

Part # 1035-FP-44BS-3C

$71.00

Volume pricing available

Load rating

300 lbs

Size10" x 3-1/2"

Capacity300 lbs

Material—

Core—

More Details Less Details

Width 3-1/2"

Temp Range -40°F to 160°F

Quick-fit wheel specs for replacement and procurement teams.

TieredPricing

Durastar 10" (410/350-4) x 3-1/2" Flat-Free Wheel, 300 lbs Capacity and 1/2" Flanged Ball Bearing Durastar

Ships in 1-3 Business Days

10" x 3-1/2" Polyurethane Flat-Free Wheel – 300 lb

Part # 1035-FF-44BS-C

$60.00

Volume pricing available

Polyurethane

Load rating

300 lbs

Size10" x 3-1/2"

Capacity300 lbs

MaterialPolyurethane

Core—

More Details Less Details

Width 3-1/2"

Temp Range -40°F to 160°F

Quick-fit wheel specs for replacement and procurement teams.

TieredPricing

Durastar 10" x 2-3/4" Semi-Pneumatic on Polyolefin Off-Centered Wheel, 550 lbs Capacity Durastar

Ships in 1-3 Business Days

10" x 2-3/4" Semi-Pneumatic Polyolefin Wheel – 550 lb

Part # 10275-SNP-AR-F-R

$51.00

Volume pricing available

Polyolefin

Load rating

550 lbs

Size10" x 2-3/4"

Capacity550 lbs

MaterialPolyolefin

Core—

More Details Less Details

Width 2-3/4"

Temp Range -40°F to 160°F

Quick-fit wheel specs for replacement and procurement teams.

Durastar flat free / pneumatic / semi-penumatic wheels by tread

Tread	Core	Wheel sizes	Rated per wheel	Listed temperature	Where it fits
Polyurethane		6, 8 and 10 in	250 to 300 lb	-40°F to 160°F	quiet, floor-friendly and long wearing
Pneumatic		10 in	300 lb	-40°F to 160°F	rough ground, outdoors, fragile loads
Rubber		8 in	250 lb	-40°F to 160°F	cushioned and quiet on finished floors
Polyolefin		10 in	550 lb	-40°F to 160°F	wet and chemical areas, light to medium loads

Ratings are for single wheels of Durastar flat free / pneumatic / semi-penumatic wheels, from product fields [S1].

Wheel sizes

Wheel	Treads	Rated
6 x 2 in	polyurethane	250 lb
8 x 3 in	rubber and polyurethane	250 to 275 lb
10 x 2-3/4 in	polyolefin	550 lb
10 x 3-1/2 in	polyurethane and pneumatic	300 lb

Choosing Durastar flat free / pneumatic / semi-penumatic wheels

Load: plan on three wheels carrying a four-wheel cart [S2]; at 300 lb each, a common rating here, that is about 900 lb, and the 550 lb top rating covers about 1,650 lb.
Floor: on Durastar flat free / pneumatic / semi-penumatic wheels, polyurethane, pneumatic and rubber are kinder to tile and finished floors; polyolefin rolls easier under heavy loads on smooth concrete.

Related to Durastar flat free / pneumatic / semi-penumatic wheels: caster wheels, FF and FP.

Durastar flat free / pneumatic / semi-penumatic wheels questions

How much weight can Durastar flat free / pneumatic / semi-penumatic wheels carry?

Single Durastar flat free / pneumatic / semi-penumatic wheels are rated 250 to 550 lb; most fall between 275 and 300 lb.

What wheel material is most common on Durastar flat free / pneumatic / semi-penumatic wheels?

Polyurethane leads on Durastar flat free / pneumatic / semi-penumatic wheels, rated 250 to 300 lb per wheel. Among Durastar flat free / pneumatic / semi-penumatic wheels, pneumatic is next at 300 lb.

Jordan Wilson, CasterHQ · reviewed October 20, 2026 · 844-439-4335 · info@casterhq.com

Sources

[S1] CasterHQ product fields (rated load, diameter, width, wheel and core material, temperature range, mount) and product descriptions for the items on this page, pulled October 20, 2026.
[S2] Preferred Equipment casters and wheels quick guide PDF (prefeq.com): load sizing on one less caster, wheel types and floor notes.