Mechanical Face Seals, also known as Heavy Duty Seals, Duo-Cone Seals
or Toric Seals are of two types: one is SDO type which consists of two
profi led metal rings along with two energizer O-Rings and the other is
the SDM type, which also consists of two L-shaped metal rings along
with a profi led diamond shaped energizer.
The metal rings are assembled in the housings, which has a relative rotary
motion between them. Sealing action is in between these metal rings,
whose mating faces are ground and lapped. Only one half of the seal
rotates, and the seal faces are kept in contact with a predetermined axial
load with the help of these energizers.
Mechanical Face seals, due to its robust construction and materials used,
off ers a longer life, compared to other possibilities for the same applica-
tion, which are tough to be sealed in normal course. These seals are thus
mostly used in dirty or rough & adverse environments.
The SDO type calls for a specially machined profi le even in the housing
cavity, whereas the SDM fi ts into an easy to make square bore.
Ø38.00 – Ø480.00
Sealing Material - Shell Mold Cast Iron
Energiser - TRIAFLEX® T565 (NBR 65)
From - 40° C to + 100° C with peaks till +110° C, with
elastomer in standard. TRIAFLEX® T565 (NBR 65
Shores). (Can be extended to 200° C when used with
elastomer in TRIAFLEX® T665 (FKM 65 Shores)).
Upto 10 m/s with oil lubrication,
Upto 3 m/s with grease lubrication, depending on
Hydraulic fl uids (Mineral Oil based ), Water, Air
etc, depending on Seal Compounds selected.
Pressure loading up to max. 3 bar for shell mold Cast