The loss of these cells is followed by the degeneration (atrophy) of the optic nerve. X-linked optic atrophy type 2 is caused by mutation in the OPA2 gene with cytogenetic location Xp11.4-p11.21. The patient presents with early-onset childhood vision loss with slow progression of loss.
Metal Seals. More Products Â» Metal Seals. Munaco Sealing Solutions, Inc. provides numerous variations of metal seals like metal O-Rings, metal C-Rings, metal E-Rings, Spring-Energized metal seals, metal U-Rings, and metal V-Rings. Munaco's unique experience helps to provide some of the most efficient metal sealing technologies available.
O-rings are common seals used in many manufacturing industries. Because of their cost, simple production, easy installation and pressure resistance, they have found their way into a lot of common products, such as automobiles and engines. EPR o-rings work well with Skydrol and other hydraulic fluids, as well as steam, water, silicone oils, brake fluids and alcohols. 2  Deficiencies: Similar to nitrile, EPR is not perfect for a wide-range of applications due to wear and tear issues.