Abstract: A seal assembly includes a pair of pipe couplings configured to be secured to a respective pair of pipes, each pipe coupling including an annular seal surface. An annular metal seal ring includes a pair of seal lips configured to engage a respective one of the annular seal surfaces of the pair of pipe couplings. A pair of scraper rings are secured to the pair of seal lips and include a scraper edge that extends radially beyond a distal end of the seal lips.

Abstract: A flange connection system, including a pair of flange rings each including a neck portion and a radially extending flange portion. The radially extending flange portion includes a distal face including a contact surface that protrudes from a remainder of the distal face. The radially extending flange portion includes a plurality of circumferentially spaced bolt holes extending parallel to a center axis. The distal face including a first seal pocket radially inward of the contact surface and a second seal pocket radially outward of the contact surface, wherein in an assembled condition, the contact surface of the first flange ring is disposed against the contact surface of the second flange ring, a first seal ring is disposed in the first seal pockets, and a second seal ring is disposed in the second seal pockets.