PTFE envelope gasket is a kind of static seals. It is composed of elastic materials such as compressed asbestos sheet, rubber, ceramics, etc. and PTFE envelope cover.
PTFE has superior properties against chemical (not affected by all chemicals except molten alkali metal and fluorine at elevated temperature) and temperatre (from -180C - +250C) the coefficient of static and dynamic friction of PTFE are very low. PTFE is the best of the "non-stick" material. It has excellent weathering and ageing characteristics.

Applications :
PTFE envelope gasket is used to seal pipe flange and joint of industrial machinery apparatus which is lined with rubber, plastic ceramics, graphite etc.

Expanded PTFE Gasket Expanded PTFE gasketing sheet is made of 100% P.T.F.E. by a special process that produces a uniform and highly fibrous mulitdirectional microstructure. These create a soft and pliable sealing material, yet a very reliable gasket that has excellent compressive resistance, negligible creep and cold flow. It can seal uneven and damaged flange surfaces.

Expanded PTFE gasketing sheet possesses all the universal resistance parameters of pure PTFE. Completely asbestos free meeting the FDA requirements.

Salient Features :

• 100% pure PTFE
• Excellent sealability and flexibility
• High recovery of the sheet after use
• Highly compressible
• High Resistant to creep and cold flow
• Unaffected by common chemicals, pH range 0-14
• Non-contaminating, non-toxic, asbestos free
• Meets FDA requirements
• Service pressure, vacuum to 210 kg/sq.cm (3, 000 psi)
• Service temperature, - 250 to + 250 C, short duration up to + 310 C
• Easy to cut by blanking, punching, also cutting with sharp blade/ knife
• Low compressive load to seal
• Can seal rough or damaged flanges

PTFE gaskets are one of the most suitable types of gaskets for a variety of sealing applications and are mostly based on virgin PTFE orfilled PTFE.PTFE gaskets provide anextensive range of applicability.

PTFE is a fluoro polymer, which features an outstanding chemical resistivity to almost all chemicals, has good thermal insulation properties, and useful mechanical and processing characteristics. These PTFE features can be usefully applied in PTFE gaskets. They can be mostly used in valve seats, bearings, requested to resin sliding and chemicals, elastic bands for an-lubricated compressors, O-rings where elastomers can not withstand. An extended range of improved mechanical and processing properties can be additionally reached by a combination of virgin PTFE and different fillers.
Expanded PTFE Gaskets and Seal materials consist of virgin PTFE with multidirectional fibrous and/or porous structure, which the extruded PTFE consists of. A special manufacturing process provides the material with special chemical and physical properties. This can be of advantage in wide range of applications.

Advantages

Virgin PTFE, PTFE compounds and expanded PTFE offer a wide range of compounded products with good mechanical, electrical and thermal properties, chemical resistance, low friction coefficient and good resistance to wear.

Shape and construction size

Several types of PTFE gaskets are produced to meet the most demanding applications.

PTFE envelope gasket is a kind of static seals. It is composed of elastic materials such as compressed asbestos sheet, rubber, ceramics, etc. and PTFE envelope cover.
PTFE has superior properties against chemical (not affected by all chemicals except molten alkali metal and fluorine at elevated temperature) and temperatre (from -180C - +250C) the coefficient of static and dynamic friction of PTFE are very low. PTFE is the best of the "non-stick" material. It has excellent weathering and ageing characteristics.

Applications :
PTFE envelope gasket is used to seal pipe flange and joint of industrial machinery apparatus which is lined with rubber, plastic ceramics, graphite etc.

Expanded PTFE Gasket Expanded PTFE gasketing sheet is made of 100% P.T.F.E. by a special process that produces a uniform and highly fibrous mulitdirectional microstructure. These create a soft and pliable sealing material, yet a very reliable gasket that has excellent compressive resistance, negligible creep and cold flow. It can seal uneven and damaged flange surfaces.

Expanded PTFE gasketing sheet possesses all the universal resistance parameters of pure PTFE. Completely asbestos free meeting the FDA requirements.

Salient Features :

• 100% pure PTFE
• Excellent sealability and flexibility
• High recovery of the sheet after use
• Highly compressible
• High Resistant to creep and cold flow
• Unaffected by common chemicals, pH range 0-14
• Non-contaminating, non-toxic, asbestos free
• Meets FDA requirements
• Service pressure, vacuum to 210 kg/sq.cm (3, 000 psi)
• Service temperature, - 250 to + 250 C, short duration up to + 310 C
• Easy to cut by blanking, punching, also cutting with sharp blade/ knife
• Low compressive load to seal
• Can seal rough or damaged flanges

PTFE gaskets are one of the most suitable types of gaskets for a variety of sealing applications and are mostly based on virgin PTFE orfilled PTFE.PTFE gaskets provide anextensive range of applicability.

PTFE is a fluoro polymer, which features an outstanding chemical resistivity to almost all chemicals, has good thermal insulation properties, and useful mechanical and processing characteristics. These PTFE features can be usefully applied in PTFE gaskets. They can be mostly used in valve seats, bearings, requested to resin sliding and chemicals, elastic bands for an-lubricated compressors, O-rings where elastomers can not withstand. An extended range of improved mechanical and processing properties can be additionally reached by a combination of virgin PTFE and different fillers.
Expanded PTFE Gaskets and Seal materials consist of virgin PTFE with multidirectional fibrous and/or porous structure, which the extruded PTFE consists of. A special manufacturing process provides the material with special chemical and physical properties. This can be of advantage in wide range of applications.

Advantages

Virgin PTFE, PTFE compounds and expanded PTFE offer a wide range of compounded products with good mechanical, electrical and thermal properties, chemical resistance, low friction coefficient and good resistance to wear.

Shape and construction size

Several types of PTFE gaskets are produced to meet the most demanding applications.