English
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 h925 mm
Groove Diameter, D1 H931.2 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 Size25.00 x 3.53 mm
O-Ring TSS Article No.ORAR00214
Quality & Norms:
Correspond to recommendation of ISO 3320yes
Material Information for the product(s) on this page
M12
Colour:
Dark Grey
Basic Material:
PTFE
Filler:
Virgin PTFE compounded with Turcon®, mineral fibre and additives
Commercial Description:
Turcon® M12 is a modern compound and the new standard industrial material. A development of thorough benchmarking and performance testing, Turcon® M12 offers low friction, high wear resistance and costs on par with standard bronze-filled compounds. This material is designed to be the first choice for seals used with linear motion, replacing standard (medium-filled) industrial bronze-filled compounds. Used in article numbers ending in M12N and M12V.
N7
Colour:
Black
Basic Material:
NBR
Commercial Description:
A 70 durometer, NBR elastomer. The properties of the nitrile rubber depend mainly on the ACN content which ranges between 18 % and 50 %. In general it has good mechanical properties with an operating temperature range of between -30 °C and +100 °C. NBR is mostly used with mineral based oils and greases and is a good choice for standard applications. Used also as an energizer in T46N, M12N, Z20N, and Z52N.