Colonial Seal Company

02/12/2025

A slight increase in pressure can drastically shorten your shaft seal’s lifespan. Learn how pressure, contaminants, and shaft speed impact seal performance and discover strategies to extend seal life in tough environments.

Learn how pressure and speed influence shaft seal performance, lifespan, and design for optimal efficiency.

11/03/2022

Improved Availability: We can supply replacements for most OEM obsolete or discontinued oil seals usually within several weeks.

04/29/2022

Colonial Seal Company supplies both standard and custom made PTFE Back-Up rings. PTFE back-up rings are available in multi-turn spiral cut, solid uncut(endless) and single-turn scarf cut(endless split) profiles. These PTFE back-up rings prevent o-rings from extruding when operating under high pressures and temperatures in both static and dynamic applications. Although these back-up rings offer no positive sealing function, they do provide protection and support to the primary sealing element, typically an o-ring.

04/28/2022

Seal case considerations for optimal seal performance: The construction of a typical rotary shaft seals consists of several interrelated components. When combined, these components which include lip material, case design & material and sealing element geometry offer a wide selection of designs for OEM’s to choose from. Familiarity with these components and understanding their interaction with each other is critical in effective shaft seal design. This article will assist equipment manufacturers and maintenance professionals by highlighting the
basic considerations of the shaft seal case. We will examine the basic rotary shaft seal case profiles and identify the major seal case materials used in the industry. Additionally, the article will attempt to cross reference the various national standards of metals used for seal case design. More:

04/27/2022

Standard rotary shaft seal profiles supplied by Colonial Seal Co. are either metal cased or fully rubber covered. These profiles can either replicate existing designs, or Colonial Seal can recommend alternative designs, if standard profiles will not meet customer needs. The seals are available in many variations of standard materials such as Nitrile (NBR), Fluorocarbon (Viton®), Silicone (VMQ), EPDM, Polyacrylate, PTFE (Teflon®) in both standard and metric sizes.

04/25/2022

Colonial Seal Company Specializes in Seals for
Bearings Manufacturers:

04/22/2022

Critical Seal Design Tolerance Charts: These tolerances for nominal diameters are published by the Rubber Manufacturers Association and are in use by most major seal manufacturers. The tolerances recognize for instance, one critical point of contact in a shaft seal as the point between the seal OD and the housing bore. Shaft seals are typically press fit into a housing bore and to ensure a snug fit, the seal OD is produced larger than the housing bore. More:

04/21/2022

Difference between a metal OD and rubber
covered seal:

04/19/2022

Gaskets fill in space between mating surfaces on machine parts and create a static seal to prevent leakage from or into joined objects while under compression.

Colonial Seal Company offers a variety of gaskets including:

Sanitary gaskets, Clamp gaskets, Polyflex gaskets, Colorgrip gaskets, Flanged clamp gaskets, Tri-clamp gaskets

We also supply Type I and Type II Spiral Wound Gaskets to Mil Spec G-24716 and custom-made die cut gaskets or water jet gaskets.

04/18/2022

How Costly is Your Machine’s Downtime?

Whether you are shutting your machinery down to perform scheduled maintenance or to repair a failed internal component the most important factor to consider is how minimize the equipment's downtime. Colonial Seal Company realizes how costly repairs to your machinery are when you consider maintenance...

04/14/2022

Hyraulic Seals are available in standard materials: Urethane; NBR, Viton, Silicone, EPDM, Teflon (PTFE), Hytrel, POM and there are many other materials available depending on the customers unique application requirements. A partial listing of some of these materials we have supplied in the past includes: neoprene; nylon; Delrin; Acetal; Fabric and Rubber; Polyester; Bronze Filled Teflon; Carbon PTFE; Graphite PTFE; Moly PTFE; FDA NBR; FDA Viton; FDA PTFE; UHMW; and Phenolic. More...

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