Trelleborg Double Delta® combines the flexibility and response of O-Rings with the wear and friction characteristics of the Turcon® materials in dynamic applications. The double acting performance of the seal follows from the symmetrical cross section which allows the seal to respond to pressure in both directions. Initial contact pressure is provided by radial compression of the O-Ring. When the system pressure is increased the O-Ring transforms this into additional contact pressure, the contact pressure of the seal is thereby automatically adjusted so sealing is ensured under all service conditions.
Installation Dimensions:
Rod Diameter, dN h935 mm
Groove Diameter, D1 H941.2 mm
Groove Width, L1 +0,24.8 mm
Material Properties:
Material TypePTFE/NBR
Seal Capabilities:
Min. Temperature-30 °C
Max. Temperature100 °C
Speed max.15 m/s
Pressure max.35 MPa
O-Ring:
O-Ring Size34.52 x 3.53 mm
O-Ring TSS Article No.ORAR00221
Material Information for the product(s) on this page
M12N
Basic Material:
PTFE/NBR
Filler:
Virgin PTFE compounded with Turcon®, mineral fibre and additives
Commercial Description:
Turcon® M12 is used as a primary sealing material and paired with an NBR (N7) elastomer with O-ring energized seals. Turcon® M12 offers low friction, high wear resistance, and costs on par with standard bronze-filled compounds. NBR is used to provide good, general sealing capabilities.