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PTFE Protective Covers

Covers are fabricated in accordance with TU 95-81-81
PTFE protective covers are intended to protect gasket material (rubber, paronite, asbestos, etc.) from aggressive media within the operating temperature range of -269 to +260.
Covers can be used in any media, except molten alkali metal solutions, trifluorochlorine and elementary fluorine.
The main advantage of this type of seals as compared to rubber, polyurethane, paronite, asbestos, leather and cardboard seals its high long-term elasticity (there is no direct contact between the elastic element and the media because the seal has a casing).
This type of seals does not require great compression efforts. Due to its elasticity, seals compensate for roughness of contact surfaces of a flanged connection.
Quality characteristics of fluoroplastic covers should comply with the requirements and standards specified in the table below:

Name

Standard

Appearance
Covers' colour - from white to grey. Colour variations, circular hairlines and surface impositions with a size of not more than 1 mm per each 25 cm2 of the surface area are allowed without any limitations; the maximum number of surface impositions with a size of 1 mm - 2 mm is 2; the maximum number of surface impositions with a size of 2 mm - 4 mm is 1.
Cover buckling (bending) is allowed.
No cracks, holes, tears or through (end-to-end) impositions are not allowed.


DN, mm Ext. diameter, mm Int. diameter, mm Price, RUR/1 pcs
  25   82 +/-2,0   28 +/-2,0   19.5 RUR  
  40   104 +/-2,0   45 +/-2,0   32.0 RUR  
  50   130 +/-2,0   65 +/-2,0   39.0 RUR  
  65   140 +/-2,0   75 +/-2,0   45.0 RUR  
  80   155 +/-2,0   94 +/-2,0   48.0 RUR  
  100   191 +/-2,0   115 +/-2,0   60.0 RUR  
  125   210 +/-3,0   132 +/-3,0   75.0 RUR  
  150   270 +/-3,0   180+/-3,0   100.0 RUR  
  225   330 +/-3,0   258 +/-3,0   130.0 RUR  
Note:
  • Prices do not include VAT (18%);
  • Covers are supplied without rubber inserts;
  • We can fabricate covers in other sizes.

PTFE Protective Covers

 

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Vyborgskaya nab. 59, block 3, St. Petersburg
Phone: (812) 324-7535
E-mail: ftoroplast@chemcom.ru