Premium Braided Mechanical Packing

Style 425

Premium Quality
SWEET SPOT & BEST USES:
FDA/USDA compliant. Firmer and more dense than the competition. It uses skived filament compliant yarns. Food products like chocolate, and pharmaceutical powders. Applications include mixers, blenders, and agitators.

PTFE yarns lubricated at the final production stage with an inert high-temperature lubricant.

Construction
Made using FDA and USDA compliant materials per CFR 21,178.3570 and 177.1550, Style 425 is an interbraided product of ultra silky PTFE yarns lubricated at the final production stage with an inert high temperature lubricant.
Characteristics
  • Style 425 has higher lubricant retention than competitive offerings due to a special SealRyt® blocking process. Style 425 is a very dense version of our FDA/USDA packing products and as such acts very well in open clearance applications. Also, this density eliminates braid porosity allowing Style 425 to be effective where gases are part of the application.
Applications
Style 425 packing is suitable for pump, valve, agitator, tank cover and similar applications whether static or dynamic. Suitable for incidental food contact applications.
NOTE: Style 425NL (No Lube) is available on special order as an oxygen certifiable product.
Base Materials
  • ‍Fluoropolymer
GENERAL APPLICATIONS
  • ‍Rotary & Reciprocating
  • Valve & Reciprocating
Reported Values of PerformANCE
Max Temp in Fº
450
pH Range
1-14
Surface Velocity in FPM
1200
Non-Oxidizing Temp in Fº
450
Pressure in PSI
NA
KEYWORDS
FDA, USDA, Skived Filament, Chocolate, pharmaceutical powder, mixer, blender, agitator
PRODUCT INFORMATION
MSDS INFORMATION
CHARACTERISTICS CHART
Cutting Ease
5
Cut Cleanliness
4
Extrusion Resistance
4
Abrasion Resistance
3
Pounding Resistance
2
Heat Dissipation
1
Shaft Scoring
3
Installation Ease
4
Deformation Resistance
4
Ability to Conform
3
Resistance to Acids
5
Resistance to Caustics
5
Dimensional Stability
4
Removal Ease
4
5 is Excellent and 1 is Marginal. This chart is provided as a guide in selecting the packing material that best meets your application needs. The listed ratings assume average conditions of rotating equipment, adequate flushes, and use of product within published parameters.

Questions? Ask our Engineers.

SealRyt Corp. is the industry leader in rotating shaft sealing technology. Our engineers have years of experience in the science of sealing. That's why we hold multiple patents on sealing technology. That's also why our products last longer, get better results, and simply seal better than any other products available.

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