WS-40 Hemispherical Polyurethane Bumper


This is a very small bumper. At only 1/4″ and 1/16″ this will work for very small applications.

Cross Reference: SJ 5382, 5164-01-00, BS-40

Package Size PriceQuantity
Case of 15,028 $332.20
Box of 7,514 $244.03
SKU: WS-40 Category:



English Metric
Diameter (Width) 1/4″ 6.4 mm
Height (Projection) 1/16″ 1.6 mm


Full Case Layout

pcs per full case 15028
pcs per pad 578
pads per case 26
pad piece layout 34 across x 17 down


Polyurethane Specifications
Spec Name Value
Tensile Strength, psi 627psi
Elongation,% 192%
Tear Strength, pli 214 pli
Hardness, Shore A 60-70 Shore A
Bashore Rebound, % 27%
Abrasion Resistance g/1K cycles Tabor 0.016
QUV (500 hours) Slight Yellowing
Adhesive Specifications
Spec Name Value
Static Shear Test 300+ hours
Quick Tack – Stainless Steel 77 oz/in2
Peel Adhesion 64 oz/in
Substrate: Thickness 2 mils
Substrate: Weight 10,000 in2/lb
Substrate: Tensil Strength 28,000 psi MD
Liner: Thickness 6.2 mils
Temperature: Application 65 deg F – 150 deg F
Temperature: End Use 0 deg F – 180 deg F
Substrate Elongation 120% MD
Shelf Life 24 months
Storage 73.4 deg F and 55% rel humidity
Liner: Basis Weight 92.0 lb

Disclaimer: Although we try our best to provide reliable information. Due to the many applications of our products, we recommend performing suitability tests for your particular application. Do not solely use this information to determine the usability of these products for your application. No person is authorized to assume any liability or obligation for the suitability of this product for a particular application.

Warning: Choking Hazard. Bumpers are not recommended where toddlers or infants are present.

Additional information



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