Seals & Ancillary
Industrial adhesives are now widely used for all types of application, especially where savings can be achieved in manufacturing times. Cynoacrylate adhesives cure with moisture in seconds and are solvent free. Various grades exist for a multitude of uses including repair. Anaerobic adhesives cure in the absence of air. Grades exist to bond threads, pipes, bearings, metal to metal, high temperatures and many other industrial components. Silicone sealants are good for gap filling and watertight joints. They are available in various viscosities and colours.
We are able to offer the full range of Loctite products and the slightly more price appealing 3M range.
Wherever a pressurised hydraulic system is to found bonded seals provide a convenient sealing method between hoses and components, and similar sealing needs. The metal ring, to which is bonded a trapezoidal rubber ring, ensures the joint can be correctly torqued without damage to the sealing element. The seals are available in both metric and imperial sizes and some special designs also exist. Materials available are steel, stainless steel, brass or aluminium for the metal washer, Nitrile, Viton, Silicone, EPDM or HNBR for the sealing element. Care should be taken to ensure the burst pressure of the chosen seal is rated within tolerance of quoted maximum pressures.
At BSC we stock both Internal 1300 and external 1400 in popular metric sizes.
Made from spring steel, or if required stainless steel, Circlips are an inexpensive and easy way to secure components in housings or onto shafts. Standard internal and external styles both in metric and imperial can be supplied by BSC. We can also supply E Clips and Bearing Retention Clips. Where downtime is costly there are spiral versions of clip avoiding the need to dismantle. It is essential that thrust loads for both housings and the housings themselves are carefully selected to ensure the correct size of clip is selected.
Face to face sealing can be achieved using various materials including Rubber, Metal, Paper, PTFE, Nylon, CNAF and a host of other materials. For large bore pipes and similar applications metal gaskets are often used whether solid, metal clad or spiral configurations. These gaskets can be fitted in areas where temperatures exceed 1000*c. In most cases there will be the need to manufacture to customer’s exact requirements. Washers of any size can be produced in Copper , Fibre, CNAF , PTFE, Nylon and so many other materials, you would need to speak to our sales team with your requirements. Proprietary Nylon shake proof washers (Seloc) and captive sealing washers (Selon) are within the product range.
Lubrication is essential in all mechanical components and grease nipples provide a simple method of introducing a lubricant. There are both Metric and BSP threads available and these nipples are straight, 45* or 90* angled styles. Whilst nipples are usually made of steel they can also be offered in stainless steel or brass.
Hydraulic & Pneumatic Seals:
Pressurised systems using air or hydraulic oil contain seals of various styles designed to maintain system pressures. Generally hydraulic systems are more highly pressurised than pneumatic and the style and material of the seals reflects this. Seals will be for single or double acting applications either piston or rod working. Should you wish us to identify seals please talk to our technical sales team as well as sending e-mail photographs, usually this is sufficient to identify particular seals. Hydraulic systems tend to have main cylinder seal, bearing rings, gland seal and o rings plus wiper seals. Pneumatic systems might well have cylinder seals and O rings only.
Whenever a mechanical seal fails it is important to talk to people who understand both the product and available replacements. The sealing takes place between the static and rotating faces and damage to either renders the seal unusable. In many such cases it is possible to have them lapped to regain the flatness required for sealing. For easy identification e-mail photographs and discussion with our technical staff often provides us with sufficient information.
At BSC we stock popular metric and Imperial Oil Seals.
There are thousands of different sizes and styles of rotary shaft seals ranging from 6mm to 1500mm. The standard styles are single lipped metal case or rubber covered, semi-dual (one sprung one unsprung lip) metal case or rubber covered, or double sprung seals again metal or rubber covered. The normal materials used are carbon steel shells and Nitrile sealing elements but it is also possible to have Stainless Steel shells and garter springs with sealing elements of Viton, Silicone, EPDM, Leather, Felt and PTFE.
Whilst o rings are the simplest of seals they are extensively used in varied situations. Elastomers include Nitrile, Viton, Silicone, HNBR, PTFE, EPDM and Polyurethane. Shore hardness can be between 40IRHD to 95 IRHD and in some instances coloured rings can be manufactured. Variants on the O ring would be the square section ring and the quad or X ring. For extremely large rings it is possible to substitute cord with a vulcanised joint. When designing it is essential groove dimensions are standard for the cross section to ensure the o ring will perform correctly. Sophisticated elastomers have been developed to enable sealing in corrosive chemical environments and high temperature applications. O rings in these new materials would normally be available.