Nitrile and polyacrylic materials have temperature ranges of −34°C to 107°C and −34°C to 177°C, respectively. Each require continuous lubrication.
silicone products rubber (More suggestions) is just not recommended for use with scorching organic supplies. If, for particular reasons, silicone gadget its use is contemplated, the producer ought to be consulted regarding its potential use for a selected utility.
Neoprene, a properly-proved packing materials, has a temperature vary of −60°C to 107°C however as a result of it’s unsuitable to be used with many natural liquids it is generally used solely with aqueous solutions. It possesses good resistance to abrasion, silicone mold which makes it notably helpful with slurries or the place there is abrasive contamination.
Metallic packings of aluminium, copper and lead cowl a really broad temperature vary up to 540°C. They must be matched to the shaft materials, since shaft end and tolerance are critical factors in overall effectivity. The nice limiting consider the usage of metallic packings is the problem of guaranteeing corrosion resistance with all the likely course of supplies.
The textile fibres have a restricted vary of application. They could also be used with hot or cold water, steam, oils and ammonia as much as a most temperature of 100° C. Asbestos fibre is more versatile, might be be used as compression packing material with sizzling water, tremendous-heated steam, hot oils and gases as much as 310°C.