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” |
|
|
Float 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. |
 |
