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H-Seal System - Six Reasons Why You Should Switch to H-Seals

H-Seals are the most cost effective, reliable and easiest to use metal seals in existence.

H-Seals™ provide a 100% reliable, ultra high-vacuum (UHV) seal that is particle free, impermeable to moisture and tolerant of temperature swings of 500+°C.

Guaranteed 100% reliable
Seals every time or free replacement
Interchangeable with rubber O-Rings, C-Seals and metal O-Rings
Cryogenic to 500+° C
Sizes from 0.300" to 14"
Available in Ni 200, Al 1100, Ox-free Cu, 316SS

Six Reasons Why You Should Switch to H-Seals

100% Manufacturing Yield with H-Seals
	H-Seals deliver an Ultra-High-Vacuum seal 100% of the time. Guaranteed, or we’ll replace the H-Seal at no cost. This is as opposed to traditional metal O Rings that often deliver manufacturing yields of less than 50%. Traditional metal O-Rings are fragile and difficult to handle in the clean-room. Even minor surface scratches may cause significant leaks resulting in low assembly yields and high rework costs.
Alignment Retainers Not Required
	H-Seals are self aligning, which saves the cost of retainers that are required with traditional metal O-Rings. Assembly is simplified and costs are reduced.
No Gland Damage with H-Seals
	With H-Seals, the soft nickel seal is sacrificed; not the gland. H-Glands can be reused for 15+ cycles with no loss of sealing capacity. Metal O-Ring glands, on the other hand, must often be re-polished or re-machined every time the part is disassembled because the metal O-Ring deforms or damages the gland.
Lower Compressive Force with H-Seals
	H-Seals generally require only 20-50% of the compressive force required for metal O-Rings allowing smaller and fewer fasteners. Space, time and money are saved.
Seal Integrity Increases with Compression
	With H-Seals, the tooth remains sharp throughout the entire penetration process, so the more force applied, the tighter the seal becomes. The H-Seal itself acts as a positive stop so there is no risk of over-tightening. On the other hand, when metal O-Rings are compressed, they flatten, which increases the surface contact with the gland, which, in turn, reduces the force imposed per unit area. Consequently, as metal O-Rings are tightened, their ability to seal diminishes.
Delicate, Highly Polished Surfaces Not Required
	H-Seals achieve a leak tight seal by conforming a soft nickel gasket, and minor machining irregularities are absorbed by the H-Seal. Lapping and polishing steps are eliminated and manufacturing costs are drastically reduced with H-Seals. In contrast, metal O-Rings demand highly polished surface finishes on both gland faces and on the O-Ring itself. Even minor scratches or imperfections may cause leaks. Consequently machining and handling costs are high.