o ring extrusion gap

ERIKS - Technical Manual - O-Ring Gland Design Information

remarkable gap and no risk for extrusion of the O-ring as long as the construction does not deform under system pressure. (fig. 1-26). When system pressure is from the out-side, the groove inside diameter is of primary importance and the groove width then determines the outside

O-Ring & Seal Extrusion Gap - Hallite

The extrusion gap can be calculated using the tolerance build ups within the cylinder and any dilation that may occur under pressure. Maximum extrusion gap = F max (see drawing below). F max is the maximum extrusion gap for the seal

O-Ring Groove Design | Global O-Ring and Seal

Below, is an extrusion chart providing the pressure limits by gap and durometer of o-ring. If the trade-offs of gap design and durometer do not work, the use of backup rings are recommended to overcome extrusion issues. Backup Ring Layouts. Backup rings are designed to eliminate the extrusion gap in high-pressure sealing applications. If the ...

O-Ring Groove Design | Global O-Ring and Seal

remarkable gap and no risk for extrusion of the O-ring as long as the construction does not deform under system pressure. (fig. 1-26). When system pressure is from the out-side, the groove inside diameter is of primary importance and the groove width then determines the outside

O-Ring Extrusion GAP CHART - American Seal and Packing

O-Ring Extrusion GAP CHART . Back-up Rings are installed on the downstream side of an O-Ring to help prevent premature failure and leakage. If the o ring cannot resist increasingly higher pressure.

O-Ring Groove Design Extrusion Limits - Seal & Design, Inc

An o-ring is contained in a gland and forced to flow into the surface imperfections of the glands and any clearance gaps available to it. An o-ring can perform sealing by means of squeeze under low pressure conditions. The extent of extrusion depends upon the hardness of O-ring, the pressure, and the size of the clearance gap.

O-Ring Durometer vs Pressure Clearance Gap Groove Deisgn Chart

O-Ring Durometer vs Pressure and Clearance Gap Groove Design Reference. Most elastomeric seals are designed to operate within ambient pressure to about 1,500 psi. At very high pressures, the seal must have sufficient strength to resist extrusion into the clearance gap. The chart at right illustrates the recommended limits of the combination of ...

(PDF) Gap Extrusion of O-rings: Comparison of Design ...

gap extrusion is to be expected from those in which extrusion of the O-ring into the gap is to be expected due to the operating conditions. Simply on th e basis of viewing and technical ...

Design Data: Extrusion Limit of O-ring & Clearance Gap

Extrusion Chart. Design Data: Extrusion Limit of O-ring & Clearance Gap. The O-ring is contained in the gland and forced to flow into the surface imperfections of the glands and any clearance gap available to it. So, O-ring can perform sealing by means of squeeze under low-pressure conditions. However, as the pressure mounts, it becomes ...

O-ring Extrusion | Back-up Rings | Parco, Inc.

Standard O-ring groove and gap dimensions cited in MIL-G-5514 and AS4873 generally provide adequate sealing for differential pressures to 1500 psi for all elastomers. Substantial improvement in extrusion resistance is attainable by 1) using harder O-rings, 2) decreasing the diametral clearance, or 3) using contoured hard rubber or plastic back ...

Seal & O-Ring Extrusion Gap - Hallite

The extrusion gap can be calculated using the tolerance build ups within the cylinder and any dilation that may occur under pressure. Maximum extrusion gap = F max (see drawing below). F max is the maximum extrusion gap for the seal. Minimum metal to metal clearance = F min (see drawing below).

O-Ring Durometer vs Pressure Clearance Gap Groove Deisgn …

O-Ring Durometer vs Pressure and Clearance Gap Groove Design Reference. Most elastomeric seals are designed to operate within ambient pressure to about 1,500 psi. At very high pressures, the seal must have sufficient strength to resist extrusion into the clearance gap. The chart at right illustrates the recommended limits of the combination of ...

O-Ring Design Considerations | Marco Rubber & Plastics ...

To avoid extrusion at high temperature, reduce the extrusion gap, increase the seal material hardness or add a back-up ring to the o-ring but will require a wider gland. Pressure Cycling Cycling pressure can cause the o-ring to move back and forth within the gland.

O-Ring Applications - Parker Hannifin

for the various O-ring cross-section diameters given in the design charts of the static and dynamic seal design sections are generally satisfactory. 3.1.4 Extrusion Extrusion of O-rings may also be prevented by the use of anti-extrusion (back-up) devices. These are thin rings of much harder material fitted into the gland between the seal and the

O-Ring Pressure Ratings | Global O-Ring and Seal

Clearance (Extrusion Gap) As a general rule, the lower the clearance, the higher the pressures the o-ring can tolerate before being extruded. The wider the clearance, the higher the probability for the o-ring to be extruded. High pressure and high clearance together create the worst scenario for the o-ring to maintain its form and function.

Extrusion and Nibbling - Parker Hannifin Corporation

Extrusion and Nibbling . Extrusion and nibbling of the O-ring is a primary cause of seal failure in dynamic applications such as hydraulic rod and piston seals. This form of failure may also be found from time to time in static applications subject to high pressure pulsing which causes the clearance gap of the mating flanges to open and close, trapping the O-ring between the mating surfaces.