With the oval ring joint gasket, the ring-shaped circular surface of the gasket presses against the trapezoidal groove of the flanges. The sealing surface pressure increases disproportionately when the bolt force is increased.

Type R oval, R 11 to R 105
Standard: ASME B 16.20 / API 6A and EN 12560-5
Flange: ASME B 16.5 and 16.47 A
Pressure rating: Class 150 – 10,000

The octagonal ring joint gasket acts like a spherical gasket and therefore creates a larger contact or sealing surface. The effect is greater than with oval ring joint gaskets. The sealing surface pressure increases proportionally as the bolt force is increased.

Type R octagonal, R 11 to R 105
Standard: ASME B 16.20 / API 6A and EN 12560-5
Flange: ASME B 16.5 and 16.47 A
Pressure rating: Class 150 – 10,000

The seal has a square cross-section with bevelled corners. The diameter of the ring joint gasket type BX is slightly larger than that of the groove. In this way, it remains pre-compressed and thus creates a high sealing value. The equalising bores correspond to the API. The sealing surface pressure increases proportionally as the screw force is increased.

Type BX, BX 150 to BX 172
Standard: API 6 A
Flange: API 6 BX
Pressure rating: Class 2,000 – 20,000

The seal was developed to utilise the pressure of the fluid and increase the sealing values. The greater the internal pressure, the more the lateral surfaces of the Type RX ring joint gasket press into the groove surfaces. The sealing surface pressure increases proportionally as the screwdriving force increases.

Type RX, RX 20 to RX 201
Standard: ASME B 16.20 and API 6 A
Flange: API 6 B
Pressure rating: Class 2,000 – 20,000

Profiles

Type SW – Spiral wound gasket without inner and outer ring for force shunt and tongue and groove applications.

Type SW-I – Spiral wound gasket with inner support ring. For front and rear flanges.

Type SW-O – Spiral wound gasket with centring ring. For flanges with and without sealing strip.

Type SW-IO – Spiral wound gasket with centring ring and inner ring. Gasket for flange connections with and without sealing strip.

Standard: EN 1514-2
Type SW-IO: SW-I and SW-O
Flange: DIN
Pressure level: PN 10 – 160

Standard: EN 12560-2
Type SW-IO: SW-I and SW-O
Flange: ASME B 16,5 and prEN 1759-1
Pressure level: Class 150 – 2,500

Standard: Work standard 104
Type SW-IO: SW-I and SW-O
Flange: DIN
Druckstufe: PN 10 – 400

Standard: ASME B 16,20 Serie A
Type SW-IO: SW-I and SW-O
Flange: ASME B 16,47 Serie A
Pressure level: Class 150 – 900

Standard: ASME B 16,20 Serie B
Type SW-IO: SW-I and SW-O
Flange: ASME B 16,47 Serie B
Pressure level: Class 150 – 900

Characteristic values for spiral wound gaskets
*depending on: Flange type, temperature, pressure, medium

The maximum permissible temperature that can generally be controlled with graphite in continuous use is approx. 460 °C at the sealing surface. Specifications for temperatures from 480 °C – 550 °C are based on laboratory data.

Preload forces and tightening torques for screws

• Preload forces (kN) and tightening torques (Nm) for with expansion shank and full shank at 70% of the minimum length.
• Coefficient of friction = 0.14.

Profile

Type KPC – Grooved gasket with centring ring: centring ring with and without predetermined breaking point.

Type KPC-T – Grooved gasket with loose centring ring.

Type KP – Grooved gasket for tongue and groove flanges.

Standard: EN 1514-6
Type KPC: KP and KPC-T
Flange: DIN
Pressure level: PN 10 – 400

Standard: EN 12560-6
Type KPC: KP and KPC-T
Flange: prEN 1759-1
Pressure level: Class 150 – 2,500

Standard: Work standard 101
Type KPC: KP and KPC-T
Flange: DIN
Pressure level: PN 10 – 400

Standard: Work standard 146
Type KPC: KP and KPC-T
Flange: ANSI B16,5
Pressure level: Class 150 – 2,500

Standard: Work standard 147
Type KPC: KP and KPC-T
Flange: ANSI B 16,47 Serie A
Pressure level: Class 150 – 2,500

Characteristic values for grooved gaskets
* depending on: Flange type, temperature, pressure, medium

• The maximum permissible temperature that can generally be controlled with graphite in continuous use is approx. 460 °C at the sealing surface.
• Specifications for temperatures from 480 °C – 550 °C are based on laboratory data

Preload forces and tightening torques for screws

• Preload forces (kN) and tightening torques (Nm) for with expansion shank and full shank at 70% of the minimum length.
• Coefficient of friction = 0.14.

Corrugated gaskets are available in very different versions. They are available as round, oval and elongated rings with webs or tabs as well as with and without supports.

The enormous variety of this type of gasket means that they are used in a wide range of applications. In particular, wherever flanges with low flexural strength are used.

We offer three basic variants in our range, all of which can be supplied by us in different variations if required.

1. Gaskets with flat soft material overlays
2. With cord supports
3. All-metal without support

Metal flat gaskets are used where, for example, special temperature and pressure values make it impossible to use other gaskets. The thickness of the metallic flat gaskets varies depending on the nature of the flange surfaces and the operating conditions.

We offer you flat gaskets made of different metals in our range.

• Steel and iron: 1.0038, 1.0308, 1.0333, 1.0335, 1.1003
• Stainless steel: 1.4000, 1.4016, 1.4021, 1.4301, 1.4401, 1.4404, 1.4541, 1.4550, 1.4571, 1.4828, 1.4876
• Heat-treatable stainless steel: 1.5415, 1.7335, 1.7362, 1.7380
• Metals: copper, brass, lead, nickel, monel, aluminium, aluminium composite

Rubber-steel gaskets consist of a steel ring encased in rubber (caoutchouc), which makes them not only corrosion-resistant but also media-protected.

The optimum area of application for rubber-steel gaskets is wherever effective sealing of cool substances with low leakage rates, coupled with low bolting forces, is required. The internal steel ring prevents the seal from being pressed out by the prevailing pressure.