Products > materials
We hope we have provided enough information on the materials we use if you need more information you can view our technical guidance or product catalogue pages. If you still wish to make an enquiry regarding any of these products, please do not hesitate tocontact us.
Non-Asbestos
nasb3: Manufactured from recycled aramid fibre jointing materials, including organic and inorganic synthetic fibres. This material can be used in a variety of applications as a competitive substitute for traditional compressed asbestos-free materials for joints in less demanding applications.
nasb4: Compressed sheet comprising of a matrix of synthetic rubber with NBR, reinforced with organic and inorganic fibres which confer temperature and mechanical resistance to the material. This material incorporates some inert fillers which increase the dimensional stability.
nasb5: This comprises both aramid and inorganic fibres, mixed with a blend of elastomers to give excellent resistance to many chemicals at elevated temperatures. The material is suitable for most medium range applications and can be used with oils, solvents, alkalis and organic acids (not Nitric or Hydrofluoric). It is also produced as NASB5G - graphite finish and NASB5MG - wire reinforced.
nasb6: Nasb6 is produced from a mixture of aramid and high quality mineral fibres bonded with a rubber NB and SBR matrix resulting in a material with exceptional flexibility and cutting properties. It's controlled swelling in oils makes it's a suitable choice for the Automotive and Industrial Machinery industries. In tests with major engine manufacturers it is far surpassing other materials in it's band. Nasb6MG is also available, having a wire reinforcement layer, ideal for higher pressure or vibration areas.
nasb9: Manufactured from aramid and high quality mineral fibres mixed with a rubber NBR matrix. This material has high compressibility, good resistance to traction and low gas permeability which are excellent characteristics for many industrial applications, where high demand for resistance to temperature and pressure must be combined. Again Nasb9MG is produced with wire reinforcement.
nasb10: Similar to Nasb9, but with modified ingredients to give a highly robust jointing material which has been approved to the UK's WRAS (Water Regulations Advisory Scheme) BS6920 - registration number 9903523.
nasb12: This is a premium grade non-asbestos sheeting, produced from carbon fibre and Nitrile rubber binder. It is suitable for steam up to 290°C and has excellent resistance to most chemicals. The material is recommended for use with oils, fuels, hydrocarbons, alkalis and refrigerants.
Cork
Harvested from the Cork tree, our supplies of this material come mostly from the western Mediterranean area. Although the raw material is replenished. (as the tree continues to grow another layer of cork bark after the harvest), the management of this truly natural product — used since the Roman times, has to be monitored very closely. Some modern alternatives (such as moulded plastic stoppers now used in some wine), have been introduced – but as we enter into the 21st Century, cork is still an important commodity for many industries world-wide.
Plain cork: These include both resin and protein bonded cork pressed into blocks and then split to various sheet thicknesses' (0.8 – 50mm). Several qualities of material are available with various densities and tensile strengths resulting in materials ranging from 5% to 40% compression with a variety of uses from table mats to high performance oil seals.
Nitrile Cork: Generally cork bonded with Nitrile rubber gives very good oil and fuel resistant gasket material which is widely used in the automotive and general engineering industries. Grades that meet various specifications are produced – BSAU120, ASTM D1170-62T. MIL C6183A and BS F66. are commonly supplied.
Neoprene Cork: Mastite Neoprene bonded cork generally combines the weather and oil resistance of the polymer with the resilience of the cork. This blend has become widely used where low-cost, low-pressure gaskets are required. Qualities to suit the heavy duty electrical, oil and general engineering industries (including anti-vibration and soundproofing) are also produced.
Silicone Cork: These materials have been developed for use with special oils in the automotive and electrical industries. For working temperatures up to 200°C this material is often the only rubberised cork to give a compressible gasket, without extruding, when sealing today’s synthetic oils and greases.
Hypalon Cork: Mastite Hypalon bonded cork has been specifically designed for under-bonnet applications where low bolting pressure and high sealability is required.
Moulded Cork All of the above blends (and others such as Polyurethane and Foam bonded corks) can be moulded into components. While vast quantities of gaskets are moulded for items such as rocker cover gaskets in the automotive industry, cork is also used widely in many less obvious roles – we’ve even moulded ornaments and knee-pads in it!
Rubber Sheeting
Mastite Rubber products include all of the standard, and many of the non-standard, elastomeric materials produced today. These materials include Fluoroelastomers (Viton ®), Silicones, Flurosilicones, Hypalon®, Butyl, EPDM, Neoprene®, Nitrile, Natural Rubber, Polyurethane and T.P.R. (Thermoplastic Rubber).
Many different qualities of these products are available from stock, and almost every conceivable specialist mix can be supplied in varying quantities from as little as 25kgs.
Each rubber has it's own particular properties and therefore it's own particular use - if you are in doubt simply ask for our Rubber Information sheet, or contact our sales team for further information.
High Temperature Materials
Graphite: Our graphite products are manufactured using the highest quality materials. Sheeting is available in different formats, Plain (foil), with steel, stainless steel or nickel reinforcement layers, either plain or tanged. We also produce laminates with metal covers on top and bottom surfaces, which are used in some of the most extreme conditions a flat sealing material can be expected to perform in.
Gold: A high temperature material manufactured from the highest quality Mica flake, bonded together with Silicon resin and reinforced with tanged stainless steel. Suitable for use in hot dry gas installations, it is the perfect material for turbines, exhaust manifolds, turbo chargers and air heat exchanger applications.
Plastics
We hope to provide you with information on plastic materials in the near future. Pleasecontact our sales team if you need any additional information on plastic materials.
