Technetics Group Japan Company Profile

The Delta Seal (HNV HELICOFLEX(R) DELTA) has two delta-shaped protrusions on the contact side of the cross-section. The delta-shaped protrusions are designed to collapse and disappear during the compression of the outer casing when the flange groove is assembled. The design tightening pressure of the Delta Seal is lower compared to the Helicoflex seal, allowing for replacement with elastomer O-rings. Leak rate: *For circular shapes, 10⁻¹² Pa·m³/sec. (10⁻¹¹ atm·cm³/sec.) *Depends on the quality of the installation side. 【Features】 ■Two delta-shaped protrusions on the contact side of the cross-section ■Achieves ultra-high vacuum ■Has excellent elasticity and can be used at high temperatures ■Can be replaced with elastomer O-rings *For more details, please refer to the PDF document or feel free to contact us.

The Delta Beta HNRV is originally designed with a low tightening pressure (Y) HELICOFLEX Delta seal combined with a specially processed internal spring, achieving replacement of rubber O-rings and improved performance. This metal seal is recommended for those who have concerns such as "wanting to eliminate gas permeation and gas release from rubber O-rings" and "unable to change the number or size of bolts on existing flanges." 【Features】 ■ Mainly for ultra-high vacuum use ■ Even lower design tightening pressure than before ■ Can be exchanged with elastomer O-rings ■ Two delta-shaped protrusions on the contact side of the cross-section It does not guarantee compatibility with existing flanges. Specifications for existing flanges are required. *For more details, please download the PDF or feel free to contact us.

We will introduce important points for making metal seals functional, as well as key considerations for designers, from a high-performance seal manufacturer of products such as spring-energized C-rings, metal seals like HELICOFLEXⓇ, and metal hollow O-rings. The selection of metal seals is crucially dependent on the design of the corresponding flanges. Factors such as the material of the flanges and bolts, the tightening load (minimum required bolt load during tightening), pressure, temperature, and the method of bolt fastening are all related to the occurrence of insufficient compression in metal seals. *For more detailed information, please download from the related catalog.