Press-Seal 4G gasket.
A rubber pipe gasket seals underground collection systems and structures, including and especially round pipes, arch pipes, elliptical pipes, box culverts, jacking pipes, and microtunneling efforts.
When considering which pipe gasket is right for your type of structure or application, you’ll find many varieties to choose from. So, take it from a rubber gasket manufacturer of more than 70 years: we’ll guide you in the right direction!
O-Ring Pipe Gaskets
The O-Ring dates back to a late 19th century Swedish patent and a US patent filed just over 40 years later. As its name suggests, the gasket is round in shape and comprises an elastomer loop with a rounded cross section. Designed to seal the connection point between two structures, often pipes, the gasket rests along the groove of one structure and compresses during installation against the other.
Press-Seal O-Ring gasket installed on concrete pipe.
In underground infrastructure, both low- and high-head applications utilize O-Rings. With a large general variety of cord diameter sizes, O-Ring gaskets from Press-Seal in particular range from 19/32 of an inch (15.08 mm) to 1.375 inches (34.93 mm) in diameter. Press-Seal manufactures these in polyisoprene and neoprene rubber compounds for certain chemical resistances.
4G & 4F Profile Pipe Gaskets
4G and 4F profile gaskets perform in many of the same ways as O-Rings. Because of their profiles, however, 4Gs and 4Fs have the added benefit of requiring less homing force upon installation, which helps prevent gasket rolling/pinching and bell breaking.
List of 4G and 4F profile gaskets offered by Press-Seal.
As with O-Ring gaskets, profile gaskets are used for a variety of pipe sizes and structure types, including manholes and box culverts. Single offset joint configurations, often used to connect concrete pipes, most commonly utilize profile gaskets.
A critical difference between the O-Ring and profile gasket rests in their installation methods, however. Although both fit into specific types of joint configurations and require lubricant to aid in homing pieces together, profile gaskets require lubricant to the bell alone, while O-Rings require lubricant to the entire gasket, bell, and groove to allow it to roll during installation.
RFS Pre-Lubricated Pipe Gaskets
Press-Seal’s RFS (Reduced Friction Seal) gasket is newer yet very popular in the precast industry and provides a unique method of installation. As with the O-Ring and profile gaskets, the RFS can be used on concrete pipes and structures. The massive benefit, however, is that it does not require any lubricant application at all!
Lubrication for the RFS is already injected inside its rubber casing during manufacturing. This unique pre-lubricated design helps reduce insertion forces and virtually eliminates the possibility of gasket rolling/pinching upon installation. Furthermore, internal lubricant helps contractors save time during installation (due to the elimination of having to apply external lubrication) and helps prevent dirt/debris from collecting on the gasket’s surface, which can cause sealing issues.
List of RFS profile gaskets offered by Press-Seal.
Grab the Right Gasket for Your Project
With countless pipe gaskets available on the market today, the different options can begin to overcrowd your decision-making process. Press-Seal is here to clear things up by guiding you to the exact gasket type, size, and quantity you need for your next project. Reach out to us toll free at (800) 348-7325 or locally at (260) 436-0521.