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Metal bellows seals

No dynamic elastomers and no springs to clog: the metal bellows is the answer for extreme temperatures, cryogenic duty and crystallising fluids. Available with graphite secondary seals for -60 °C to +450 °C.

Products in this line · 7

Style 580

Style 580

Rotating component seal with AM350 metal bellows. Available with Hastelloy C276 bellows and retainer (581) or AISI 316 retainer (582).

Temperature
-40 ÷ +305 °C
Pressure
40 bar
Speed
15 m/s
Materials
Fuelle / bellows: T6 (AM350)
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Style 780

Style 780

Single rotating metal bellows cartridge seal. Stationary (784), quench lip seal (780Q) or bushing ring (780FB) versions.

Temperature
-40 ÷ +305 °C
Pressure
25 bar
Speed
20 m/s
Materials
G · T6 · T1 · M5
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Style 788

Style 788

Double rotating metal bellows cartridge seal, with a wide range of bellows materials. Stationary version: Style 787.

Temperature
-40 ÷ +305 °C
Pressure
21 bar
Speed
25 m/s
Materials
G · T6 · T1 · M5
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Style 590 / 591

Style 590 / 591

Rotating metal bellows component seal with graphite secondary seals for cryogenic or high-temperature duty up to 380 °C. The 591 adds a drive pin and double-ply bellows.

Temperature
hasta / up to 380 °C
Pressure
590: 30 bar · 591: 50 bar
Speed
590: 20 m/s · 591: 15 m/s
Materials
T6 / T6 doble capa
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Style 790

Style 790

Single rotating metal bellows cartridge seal with graphite secondaries. Stationary (794), quench (790Q) or floating bush (790FB) versions.

Temperature
-60 ÷ +450 °C
Pressure
21 bar (doble capa / double ply: 65 bar)
Speed
25 m/s
Materials
G · T6 · T1 · M5
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Style 798

Style 798

Double rotating metal bellows cartridge seal with graphite secondaries for the most severe temperatures. Stationary version: Style 797.

Temperature
-60 ÷ +450 °C
Pressure
21 bar (doble capa / double ply: 65 bar)
Speed
25 m/s
Materials
G · T6 · T1 · M5
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Diamond Coating Technology

Diamond Coating Technology

Metal bellows seal faces can also be supplied with CVD diamond coating, which drastically reduces friction and generated heat and tolerates occasional lack of lubrication. Especially useful in hot services and low-lubrication media.

Feature
Estándar 8 µm · Heavy Duty 16 / 24 µm
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The limits shown are indicative and must never be combined at their maximum values. Ask us about your actual service condition.

Let's talk about your application

Tell us what you need to seal — pump, valve, agitator or line — and we will come back with a technical recommendation and a quotation.