What are the requirements for auxiliary materials of mechanical seals

Posted by yunying258 on April 8th, 2020

After deformation, it can be used for a long time. In addition to soft PVC, common auxiliary sealing materials are rubber and PTFE.

   1. PTFE has the advantages of excellent chemical stability, oil resistance, solvent resistance, moisture resistance, low coefficient of friction, etc. The disadvantage of being suitable for various corrosive media is that its elasticity is inferior to rubber and easy Produce permanent deformation.

   2. Rubber Rubber has better elasticity, cushioning, vibration absorption, heat resistance and corrosion resistance. Rubber seals have good sealing effect and are widely used. Commonly used rubbers are silicone rubber, nitrile rubber, neoprene rubber and fluorine rubber.

   Elastic element material For Mechanical Seal

   1. Spring material The requirements of the spring material are: good elasticity and resistance to medium corrosion. Common spring materials are stainless steel spring steel (1Cr18Ni9Ti, etc.), chromium steel (3Cr13, 4Cr13, etc.), carbon cable spring steel (60si2Mn, etc.) and phosphor bronze.

   2. Bellows material The requirements of the bellows material are: good welding performance, great elasticity, and certain corrosion resistance. Commonly used bellows materials are iron-based, copper-based and nickel-based alloys, and titanium materials. Generally, nickel-chromium austenitic steel strips in titanium-based materials are the main materials, especially 1Cr18Ni12Mo2Ti. The high-nickel elastic alloy is considered to be an ideal material for manufacturing bellows. When using conventional welding techniques, aluminum-containing materials encounter difficulties. At present, the most widely used bellows material is AM350 (about Cr16Ni45MnMo3N), which is a solid solution with low strength, low hardness and high elongation.

Download Plans to Build Instruments
Download these blueprints for building a professional marimba, Vibraphone, Xylophone, metalophone and Glockenspiel - all without special materials or tools.

Christian Guitar Lessons - Learn Guitar....Learn Worship!
Easily learn guitar and worship songs with follow-along video lessons!

Pure Pitch Method - Master Absolute Pitch & Relative Pitch
Master Absolute Pitch and Relative Pitch in less than 6 weeks! The complete Pure Pitch training kit.

Dan O'Day's Radio and Voiceover Tools
Shop now for radio & voice overs. CDs, DVDs, books, mp3 training for program directors, production, imaging, sales, management, air talent from DanODay.com.

How To Draw Cartoon Animals Step by Step
This incredible method works for ANYONE… whether you’re already good at drawing and want to take your skills to the next level, or if you’ve never even drawn before but have always wanted to try.

Ukulele Lessons - How to Play the Uke!
Learn to play the songs you love, easy video lessons for beginners. Instructions for strumming, chords and more.

Advertise Here