Gaskets

API Ring Joint GasketsAPI Ring Joint Gaskets come in two basic types, an oval cross section and an octagonal cross section. These basic shapes are used in pressures up to 10,000 psi. The dimensions are standardized and require specially grooved flanges. The octagonal cross section has a higher sealing efficiency than the oval and would be the preferred gasket. However, only the oval cross section can be used in the old type round bottom groove. The newer flat bottom groove design will accept either the oval or the octagonal cross section. The sealing surfaces on the ring joint grooves must be smoothly finished to 63 Microinches and be free of objectionable ridges, tool or chatter marks. They seal by an initial line contact or a wedging action as the compressive forces are applied. The hardness of the ring should always be less than the hardness of the flanges. BX and RX Ring GasketsThe BX ring gasket differs from the standard oval or octagonal shape in that it is square in cross section and tapers in each corner. BX can only be used in API 6BX flanges. RX ring gaskets are similar in shape to the standard octagonal ring joint gasket but their cross section is designed to take advantage of the contained fluid pressure is effecting a seal. They are both made to API-6A, AP1-17D and ASME B16.20.Special Ring Joint GasketFor critical and non standard applications, where ring type joints are unsuitable in their standard form, Goodrich Gasket offers a range of specialized ring type joint gaskets to suit the needs of the petrochemical industry. • Type R Ring Joints with PTFE Inserts • Type RX Ring Joints with PTFE Inserts • Rubber Coated Ring Joints • Transition Ring Joints • Blind Ring Joints • Flange Guards 

We offer a variety of coating systems for RTJ's that are specifically selected to meet our customer’s performance specifications. Coating and plating options include:•  Zinc Plating for Standard Products•  Xylan Coating for Extreme heat & Pressure•  Cadmium Plating & Other special Coating for other application.

vacuum to the standard 2500 PSI flange ratings. They are more resilient than any other type of metallic Gasket with the exception of pressure sealing metal Gaskets and, as a consequence, can compensate for flange movement that may occur due to temperature gradients, variations of pressure and vibration.

Types of Spiral Wound GasketType RBasic construction, inner and outer diameters are reinforced with several piles of metal without filler to give greater stability and better compression characteristics. Suitable for tongue and groove or male and female or grooved to flat face assemblies. Type RIRSolid inner metal ring acts as a compression stop and fills the annular space between flange bore and the inside diameter. Designed to prevent accumulation of solids, reduce turbulent flow of process fluids and minimize erosion of flange faces. Suitable for male and female pipe flanges. Type CG Utilizes an external ring which accurately centers Gasket on flange face: provides additional radial strength to prevent Gasket blowout and acts as a compression stop. A general purpose Gasket suitable for use with flat face and raised face flanges. Type CGI Suitable for use with flat face and raised face flanges and specified for high pressure/temperature service or where corrosive or toxic media are present. Note on use of inner rings: ASME B16.20 which covers spiral wound Gaskets requires the use of solid metal inner rings in Pressure Class 900, nominal pipe sizes 24" and larger, Pressure Class 1500, nominal pipe sizes 12" and larger, Pressure Class 2500, nominal pipe sizes 4" and larger, and for all PTFE filled Gaskets.Type HEType HE Gaskets are used for heat exchangers where pass bars may be required. The outer portion is of standard spiral wound construction, whereas the rib partition is normally of single or double jacketed Type, securely fastened to the I.D. of the spiral wound portion. Type HE-CGThis Type is identical to the Type HE, except that it is fitted with an outer guide ring.Type HE-CGI With Spiral Wound Outer RingThe Type HE-CGI is a variation of the Type CGI spiral wound Gasket, developed for use on heat exchanger TEMA type flange arrangements. In conjunction with an inner ring, the standard spiral wound construction also supports an outer wound steel nose, designed for the purpose of accurate Gasket location. It is also available with solid metal outer ring.Type CG-RJThis Type designates a specially sized CG Gasket to be used on standard ring joint flanges. The outer ring is dimensioned to cover the ring joint grooves and to prevent the spiral wound portion from entering the groove. This type of Gasket should be used only as a maintenance repair item. Type 625Type 625 spiral wound Gaskets are similar to Type R Gaskets, with a thickness of 0.0625". These Gaskets are widely used wherever space restrictions indicate the need for a wafer thin Gasket design capable of sealing high pressures. Type M, MC & MCSThese Types are designed for boiler manhole cover assemblies. They are usually round, obround or oval shape, depending of course , upon the manhole plate configuration. Type MC Gaskets have pre-formed inner and/or outer rings made of spiral windings. This centering guide permits the Gasket to assume its correct position and to compensate for inequalities in plate contours and fillets in cold-pressed plates as well as to prevent shouldering and pinching caused by radial misplacement. Type MCS Gaskets are manufactured with a solid metal inner and/or outer ring which also prevents over compression of the Gasket in high pressure systems.

Single Jacketed GasketsThe filler material is enclosed in a metal jacket which covers the inside and outside diameter of the gasket.

Double Jacketed GasketsThe filler material is completely enclosed by a two piece metal jacket, which covers both the inside and outside diameters and both contact surfaces. Double Jacketed Gasket can be with or without Corrugation

Kammprofile GasketsThe Kammprofile is the multi seal Gasket ( Every groove will act as separate seal ). It is a preferred gasket when needing improved performance at low seating stresses. It features excellent anti-blowout properties associated with the reliability of a solid seal combined with soft sealing face to ensure a tighter joint. Kammprofile is an ideal replacement for problem applications associated with all HeatExchanger Gaskets.

Solid Metal GasketsSolid Metals are used directly without any soft filler as gaskets. The temperature limitation of the gasket is therefore only effected by the metal selected.

Sprial wound GasketsSpiral Wound Gaskets are used in Heat Exchangers in three types. Gasket with Inner and outer ring, Gasket with Inner Ring with or without Outer Nose, Gasket with only Outer Nose. Most commonly used are Gaskets with Inner Ring and Outer Nose. If partitions are required Jacketed Ribs are attached to the Inner Ring.