Products > Polyurethane Spheres

Bonaprene Products manufacture a wide range of sizes of polyurethane spheres for the pump, dewatering

and water treatment industries.

 

The table below lists Bonaprene’s range of sphere indicating parts generally in stock. These are made in

80 Shore A orange though other hardness and colour combinations can be made.

 

 

       

       The Bonaprene spheres are made to the highest standards of

       spherical geometry and surface finish to give the best sealing

       function. Bonaprene use the highest grades of polyurethane

       material for high wear resistance, resilience and resistance to

       compression set. 

 

 

 

 

 

    

Spheres
Reference Number	Diameter mm	Diameter inch	Stock Item
1476	32	1¼ ”
1814	35	13/8”
1477	38	1½ ”	UAV0001
1587	41	15/8”
1390	48	17/8”
1081	51	2”
1199	58	2¼ ”
1089	63	2½”
1110	70	2¾”	UAV0005
1115/1171	76	3”
1074	81	3¼”
1308	84	35/16”
1198	89	3½”	UAV0009
1091/1173	95	3¾”
1090	100	4”	UAV0013
1174	120	4¾”	UAV0017
1075	128	5”	UAV0024
1082/1092	146	5¾”
1192	150	6”	UAV0025
1310	153	6”
1694/1782	180	7”	UAV0029
1107/1095	190	7½”	UAV0033
1105	245	9¾”
1682	250	9¾”	UAV0037
1116	290	113/8”	UAV0041
1893	350	13¾”	UAV0045
1094	378	14¾”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Floating Spheres with Foam Inserts

 

Bonaprene’s standard spheres have a specific gravity of 1.22. Where

spheres that can float are required Bonaprene produce a polyurethane

encapsulated foam sphere to give a specific gravity of below 1. The thick

polyurethane coat ensures these spheres have all the robustness of the

 standard product.

 

Foam Floats

 

Complimenting Bonaprene’s range of polyurethane spheres is a wide

range of polyurethane foam floats. Bonaprene make these rigid integral

skin polyurethane floats with and without stainless steel inserts.

 

 

Spheres with Metal Inserts

 

Where heavier spheres are required Bonaprene encapsulate   

 a range of metal inserts in the polyurethane. These include

 aluminium, cast iron and hollow aluminium and cast iron

inserts. Each insert is shot blasted, cleaned and bond sprayed

to ensure a homogenous polyurethane/ metal sphere resistant

 to splitting and separation. The picture on the right shows a

cast iron insert, from left to right, in it's natural state, then

after shot blasting, cleaning and with a high temperature

bonding agent applied and finally with a clear polyurethane

casting to make the final sphere product.

 

 

 

Polyurethane Seats

 

Bonaprene Products also manufacture a wide range of polyurethane  

seats to complement the range of spheres. Made from the same grade

of high wearing urethane as the spheres, they offer high resilience and

resistance to compression set. Combined with Bonaprene’s  in-house

tool making facility Bonaprene can offer seats to meet any requirement.