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Compounds & Proprietary Formulations

Custom FDA and USP Compounding

Selecting the best compound for a high purity process where gaskets, O-rings and diaphragms are used is critical… and can be challenging. Many customers are not aware that EPDM, Viton, Buna-N, Silicone, etc., are just general classes of base materials (resins) used in making seals and gaskets. No two EPDMs or Buna-N’s are the same.  There are literally hundreds of different resins in each class, and once a resin is chosen, it must be formulated with other materials into a compound with which to make a hygienic gasket and elastomers.

Each elastomer compound and the way it is manufactured into a part will result in a unique set of performance properties: physical properties (e.g. tensile strength, compression set), chemical resistance (e.g. to both process and cleaning materials), temperature range (high, low and cycling) and longevity once installed in the process.  Poor compounds are simply made to be inexpensive and will quickly degrade, contaminate the product, and add cost to the operator to clean up.  Good compounds will keep the process clean, predictable and reliable and will give years of service.

Newman’s compounds are expertly chosen, formulated and produced under our strict controls by an in-house chemist.  All Newman’s products are traceable to the batch of raw material used. Many of the compounds we use are proprietary and unique only to Newman.

To assist our customers in selecting the most optimal material Newman has developed a Compound Selection Tool.

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Newman Sanitary Gasket Company’s mission is to continually grow in our ability to meet our customers’ needs and improve our capabilities. We strive for excellence in quality, service, supply, distribution, and product development and performance. You can count on Newman Sanitary Gasket Company as your number one provider for all your gasket needs.

Class VI Gasket Material Options

Compound Temperature Range Recommended Applications Performance Properties
EPDM (Link to more detailed information) Varies by Grade:   -55oF (-48°C) to 275oF (135°C) (short term to 325oF (163°C) Processing Areas, CIP, Purified Water Systems, Ozone-treated Water Resists water, ozone, heat, cold, steam, abrasion, moderate acids and bases  
Viton™ (fluorocarbon rubber) (Link to more detailed information) Varies by Grade:   Typical: -2oF (18°C to 450oF (232°C) (short term to 550-600oF (287-315°C)) CIP, Many food applications ·Resists high temperatures, steam, petroleum and vegetable oil. ·Broad chemical resistance (higher grades approach PTFE) ·Long lasting ·Low Extractables
Teflon™ (fluoropolymer) (Link to more detailed information) -110oF (-78°C) to 450oF (232°C) (short term to 500oF (260°C)) Strong acids and Bases, Continuous Steam, High purity Processes. Use in applications where the temperature is fairly constant. ·Widest Chemical resistance of all materials (acids, bases, water, oil, solvents) ·Widest temperature range of all materials.
Silicone (Link to more detailed information) Varies by Grade: Typical: -80oF (-62°C) to 350oF (176°C) (short term to 400oF) Single-use applications, downstream applications Excellent Clarity, Simple Extractable/Leachable Profile, Wide Temperature Range, Easy to Compress with Single-use Plastic fittings, Moderate Steam and Chemical Resistance.
Silverback™ (50/50 blend of PTFE and 316 stainless steel) -110oF (-80oC) to 400oF (204oC) (short term to 420oF (215°C)) Steam Applications, low temperature applications, constant temperature applications. Wide Temperature Range, Excellent Equipment Support, Low Cold Flow.  When used with High Pressure Clamps, one of the most durable and versatile materials.

Newman Gasket Material Options

Compound Temperature Range Recommended Applications Performance Properties
EPDM (Link to more detailed information) Varies by Grade:   -55oF (-48°C) to 275oF (135°C) (short term to 325oF (163°C) Processing Areas, CIP, Purified Water Systems, Ozone-treated Water Resists water, ozone, heat, cold, steam, abrasion, moderate acids and bases
Viton™ (fluorocarbon rubber) (Link to more detailed information) Varies by Grade:   Typical: -2oF (18°C to 450oF (232°C) (short term to 550-600oF (287-315°C)) CIP, Many food applications ·Resists high temperatures, steam, petroleum and vegetable oil. ·Broad chemical resistance (higher grades approach PTFE) ·Long lasting ·Low Extractables
Teflon™ (fluoropolymer) (Link to more detailed information) -110oF (-78°C) to 450oF (232°C) (short term to 500oF (260°C)) Strong acids and Bases, Continuous Steam, High purity Processes. Use in applications where the temperature is fairly constant. ·Widest Chemical resistance of all materials (acids, bases, water, oil, solvents) ·Widest temperature range of all materials.
Silicone (Link to more detailed information) Varies by Grade: Typical: -80oF (-62°C) to 350oF (176°C) (short term to 400oF) Single-use applications, downstream applications Excellent Clarity, Simple Extractable/Leachable Profile, Wide Temperature Range, Easy to Compress with Single-use Plastic fittings, Moderate Steam and Chemical Resistance.
Silverback™ (50/50 blend of PTFE and 316 stainless steel) -110oF (-80oC) to 400oF (204oC) (short term to 420oF (215°C)) Steam Applications, low temperature applications, constant temperature applications. Wide Temperature Range, Excellent Equipment Support, Low Cold Flow.  When used with High Pressure Clamps, one of the most durable and versatile materials.
Buna-N (Nitrile) -40°F (-40°C) to 225°F (107°C) Short term to 267°F (130°C) Food and Dairy Applications, Edible Oils and Fats, 3A applications.   Moderate Temperature Range, Excellent Oil and Fat resistance. Good in Static Sealing Applications to Freezing Temperatures.

We guarantee highest quality sanitary elastomer parts available on the market.

Quality Assurance

Quality Assurance

We monitor performance with Statistical Process Control (SPC), which drives our improvement and consistency.
Rigorous Testing

Rigorous Testing

Every batch of polymer and every lot of gaskets is tested for physical properties and optically inspected to meet tolerances.
Inspection

Inspection

Our inspectors are the gatekeepers to our inventory of high quality sanitary gaskets and elastomer parts.
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Newman Sanitary Gasket Company is a leading manufacturer of FDA and USP Class VI seals for High Purity Process applications such as the Pharmaceutical, Food & Beverage and Dairy industries. Newman Diaphragms provides world class replacement diaphragms for ITT®, Gemü®, Saunders® and Aquasyn® valves.

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Address
P.O. Box 222 Lebanon, OH 45036
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