SELF DRILLING SELF PIERCING METAL THREADED

Brand	Owner	Address	Description
BLAZER	Triangle Fastener Corporation	1925 Preble Avenue Pittsburgh PA 15233	self-drilling and self-piercing metal threaded fasteners;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A drilling flange and an independent screwed wellhead provides a metal-to-metal seal that supplements the traditional elastomeric O-rings for providing a fluid seal between the drilling flange and the wellhead. The metal-to-metal seal may be achieved using a metal ring gasket or two contacting metal surfaces that are machined to required tolerances and are configured to be forced together when the drilling flange is mounted to the wellhead. The metal-to-metal seal ensures a fluid seal between the flange body and the wellhead in the event that the O-rings malfunction or are destroyed by fire.