Molded Elastomeric Diaphragms are tough, versatile dynamic seals that eliminate virtually all of the limitations associated with other sealing methods like U-cups, O-rings, metal bellows and flat die-cut diaphragms. They can withstand pressures to 6,000 psi (4.137 bar) over a temperature range from -76°F to 626°F (-60°C to 330°C). We currently manufacture diaphragms ranging in size from 0.1969" to 29.1339" (5 mm to 740 mm). 

Inseal is dedicated to providing diaphragm seals that enhance the performance and appeal of your product at a price point that helps you compete. Our engineering department stands ready to provide product design support that is both timely and comprehensive.

PTFE is one of the most chemically inert compounds, however, has very little elasticity, which can reduce flow rates upto 20%. A rubber back-up diaphragm is required to provide flexibility and memory. Many other materials, usually derivates of the above, have been developed by individual pump companies for use in their own pumps. 

These PTFE protected diaphragms combine the chemical resistance associated with PTFE with the flex characteristics of an elastomer. The PTFE is chemically bound to the underlying rubber. Since it is manufactured as one piece, the risk of separation normally associated with two-piece overlaid diaphragms is eliminated, increasing time on-line. One-piece construction avoids the possibility of leakage and also prevents abrasive particulate material getting between the PTFE and rubber, which could cause damage and lead to reduced diaphragm lifetime. 

[Fabric Sheets Diaphragms]
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Fabric Sheets Diaphragms are manufactured using superior quality material to ensure international quality standards. These are used in almost all branches of industry while punching or drilling the items in engineering, automotive industry and aircraft construction. Extensively known for longer functional life, excellent finish and high performance, these diaphragms are highly demanded in the market. 

Features:

The sheets can also be manufactured with a PTFE layer and with fabric reinforcement.
Surface quality can be influenced by grinding or shot blasting.

Operating Conditions:

Media: depends on choice of material.
Temperature: between -50 C and 200 C according to material.

Fabric-Reinforced Diaphragms are used as layer of an engineered fabric material as element of the diaphragm construction. This coat of fabric gives incredible design flexibility. An extremely thin-walled diaphragm can endure high pressures while enduring very flexible and receptive to minor pressure variations. This diaphragm is similar in function to the kind WD-02 diaphragm, while the hardware and sealing designs are the same as the Type WD-08. The advantage of this style is that the handwork of forming the difficulty is removed, which greatly reduces the assembly time.

PTFE Teflon Diaphragms are made using best grade material and in conformity with international quality standards. These diaphragms are entirely interchangeable with elastomer diaphragms in size 1”thru 8”. These diaphragms are used in various types of pumps, valves and actuators that are applicable in critical corrosive applications. This means the existing values with elastomers diaphragms are upgraded to Teflon (PTFE) diaphragms.

Features:

High quality
Durability
Operational accuracy

Applications:

Metric pumps
Diaphragm pumps
Diaphragm valves