Mechanical Seals

SealSales.com carry high quality market seals to suit all types and Gaskets Materials, like PTFE, Single Spring Seals, Bellows Seals,Stationary Seats,Cartridge Seals,Gauge Glass,O-Rings,PTFE and many more.

Tuesday, 17 November 2015

Material Selection

Its very difficult to choose the right gasket for the job these days, there are just so many styles. There are many different packings with similar properties and prices. And with the ban on asbestos-based materials, there are many more styles being made to replace them. The four basic things you have to keep in mind when selecting a material are as follows: • Operating Pressure • Bolt Load • Resistance to chemical attack (Corrosion) • Operating temperature The corrosion resistance can vary based on a couple different factors: • The concentration...

Styles of PTFE

Molded and Sintered PTFE: This type of PTFE was the first to be introduced to the market. This style is made from virgin or reprocessed PTFE resin, without fillers, which is then molded, compressed and sintered. As with any other type of plastic, PTFE has a high creep factor when compressed. The creep factor is detrimental and can lead to having to re-tighten the bolts to maintain seating pressure and prevent leakage. The higher the temperature in the application it is used for, the more the creep factor will increase. Even with these drawbacks,...