Advantage Seal Type 81BB replacs:
John Crane® Type 58B,
AESSEAL® M04SU,
Eagle Burgmann® BT-C5.KB,
VULCAN® 1659BS,
ROTEN® 259BS
Type 81B is a DIN seal for general- and high-pressure duties in the processing, refinery and petrochemical industries. Alternative seat designs and material options are available to suit product and operating conditions of applications.
Design standard：ISO3069 DIN24960 API 610
A versatile design with multiple material options for the widest range of liquids and temperatures
A balanced seal with the advantage of being very short and fits within the DIN 24960 L1K operating length when used with a suitable seatat.
Pressure：p1 = 62 bar (899 PSI)
Temperature：t = -40 °C … 230 °C
Sliding velocity：vg = 25 m/s (82 ft/s)
Typical applications include oils, solvents, water and refrigerants, in addition to a multitude of chemical solutions.
Used in petroleum, chemical industry, chemical transportation, water treatment, chemical fiber and other fields.
Type 91
Type 81
Type 37F
Type 91B
Type 37
Type 846B
Type 846
Type 852
Type 850B
Type 850
