Rubber Gaskets
Types of PTFE Gaskets:
PTFE Gaskets Details
PTFE Gaskets
- PTFE is extremely useful as a gasket material, thanks to its almost chemically inert nature
- Unfortunately, the material has a tendency to creep under load and has limited use in such applications
- Modified PTFE materials allow the benefits of PTFE to be utilised at higher compressive loads and temperatures
- For instance, expanding the PTFE produces a softer material with a higher strength
- The addition of fillers such as silica, silicon carbide or barium sulphate lends the material better hot and cold flow resistance. Hence, the chemical resistance is not negatively affected
- PTFE can also be used as an envelope instead of a more conventional compressed fibre gasket material insert
- This combines the chemical resistance of the PTFE with the stress retention and recovery properties of the insert
- The result? The negative effect of the PTFE on the joint’s mechanical stability is reduced
Specifications
- Remarkable chemical resistance
- Suitable for use with foodstuff and pharmaceutical applications
- Insoluble in solvents, even at increased temperature
- Stable to light
- Does not absorb water
- Excellent electrical insulating capacity
- Low thermal conductivity
Expanded PTFE
- Expanded PTFE materials has excellent creep resistance and bolt torque retention properties
- This allows PTFE to be used at higher temperatures and to seal higher internal pressures
- Expanded PTFE tape form with a pressure sensitive adhesive backing strip to assist with installation
- Since the material is available in roll form it offers a solution to jointing needs without the need to maintain large stocks of cut gaskets
Expanded PTFE Properties
- Combination rings or transition rings combine two different sizes having the same pitch diameter permitting bolt up of differing size flanges
PTFE Envelope with Compressed Fibre Insert Properties
- Excellent chemical resistance
- PTFE envelope gaskets comprise a compressed synthetic fibre gasket material insert with a PTFE envelope
- The envelope protects the gasket from chemical attacks and provides required strength and resilience for demanding sealing operations
- PTFE envelope gaskets offer excellent chemical resistance under moderate conditions of temperature and pressure
Non-asbestos Gaskets
- Non-asbestos Gaskets is made of high quality non-asbestos fabric and synthetic rubber
- Non-asbestos Gaskets sealing ability is exceptional and safe against oil
- Suitable alternative for asbestos
Types of Rubber Gaskets
Rubber Gaskets Details
Nitrile (NBR) Rubber Properties
- Universal, oil resistant rubber
- High-quality general-purpose nitrile sheet
- Recommended for added resistance to mineral oil, alcohol and petroleum products especially under hot conditions
- Avoid using under sunlight or near sparking electrical apparatus
Neoprene Rubber Properties
- High-quality general-purpose poly-chloroprene sheet
- Recommended for using in less demanding situations like air, water, non-oxidising acid and aliphatic hydrocarbons
- Recommended for using in less demanding situations like air, water, non-oxidising acid and aliphatic hydrocarbons
- Ideal for situations where extra resistance to heat, ozone or weathering is required
SBR Rubber Properties
- General purpose, synthetic equivalent to natural rubber
- Offers similar mechanical properties but better high temperature performance, flexibility, and a greater resistance to attack from animal and vegetable oils
EPDM Rubber Properties
- Excellent mechanical properties
- Resistant to ageing, weathering, ozone, oxygen, steam, and water
- Recommended for using in conditions where resistance to sunlight, weather, steam, and ozone attack is required
- Can be used with phosphate ester-based hydraulic fluids and numerous mineral acids
- Not suitable for petroleum based oils or fluids
Viton Rubber Properties
- High temperature rubber material with resistance to a wide range of chemicals
- High quality fluorocarbon rubber, exhibiting a wide range of chemical resistance
- Extremely-resistant to the effects of oxygen and ozone
- Retains excellent mechanical properties even when subjected to high temperatures for longer periods
Butyl Rubber Properties
- Resistant to phosphate ester based hydraulic fluids and mineral oils
- Highly-impermeable to gas and moisture but is not recommended for petroleum oils and fluids
- Good resistance to phosphate ester based hydraulic fluids and mineral oils
- Highly impermeable to gas and moisture and has good general chemical resistance including mineral acids
- Resistance to petroleum oils and fuels is low
Natural Rubber Properties
- Excellent general purpose poly-chloroprene sheet
- Recommended for use in less demanding situations with air, water, non-oxidising acid and aliphatic hydrocarbons
- Offers extra-resistance to heat, ozone or weathering
- Medium quality commercial grade, exhibiting the qualities required for a good gasket
- Suitable for gaskets and packing where no high resistance to heat, oils, or solvents is required
- Ideal for cold water, sewage pipes, etc.
Silicone Rubber Properties
- High-quality silicone rubber with excellent resistance to temperature extremes
- Good weathering properties
- Can be used in contact with food stuffs
- White silicone rubber is also available
General Compressed Non-Asbestos Fibre
- Specially formulated and designed to meet the highest standards of performance for a wide range of industrial applications
- High performance inorganic or organic fibres blended with elastomeric compounds make CNAF a long-term sealing solution
- A popular choice even under the most exacting operating conditions
Compressed Non-Asbestos Fibre Details
General Properties of CNAF
- Capable of sealing a wide range of industrial applications
- Easy to handle and install
- Excellent bolt stress retention properties
- Remarkable sealing performance
- Easy to remove due to CNAF’s proprietary anti-stick coating
- Economical
Aramid Fibre with NBR Binder Properties
- Good resistance to oils, fuels, hydrocarbons
- Successful in internal combustion engine applications
- Available in sheet form as cut gaskets
- 3xA anti-stick finish on both sides
Aramid & Glass Fibre with NBR Binder Properties
- Good resistance to oils, fuels, hydrocarbons
- Fantastic economical option for general industrial services
- Available in sheet form and as cut gaskets
- 3xA anti-stick finish on both sides
Aramid Fibre with SBR/NR Binder Properties
- Premium grade, controlled-swell materials
- Available in sheet form and as cut gaskets
- 3xA anti-stick finish on both sides
Synthetic Fibre NBR Binder Properties
- Excellent seal-ability even at low bolt loads
- Economical
- Good resistance to oils, fuels, hydrocarbons, and water, etc.
- Excellent gas leakage properties
- Available in sheet form and as cut gaskets
- 3xA anti-stick finish on both sides
ReinforCedGraphite Gasket Reinforcements
Product Details
ReinforCed Graphite Gaskets
- Wide-spread sealing products
- Consists of pure carbon in which the crystalline structure has been considerably expanded through special chemical and thermal procedure
- The expanded crystals are formed into foil by a multi-stage calendaring process
- Thin flexible graphite foil can then be laminated into thicker sheets to manufacture a range of sealing products
- Flexible graphite sheet can also be supplied with reinforcing materials to increase the tensile strength, load bearing capacity, and improve handling characteristics
- Laminated graphite sheet materials are often used as a replacement for asbestos-based materials. Because of their excellent chemical resistance and temperature
- Graphite laminate materials are ideal for steam applications as they do not contain a rubber binder and are not subjected to hardening of the material
Specifications
- Outstanding resistance to high and low temperature
- Chemically resistant to virtually all media
- High compressibility
- Low creep under temperature or pressure
- Seals gases and liquids effectively at low bolt loadings
- Unlimited storage life