Flange coupling for the vacuum industry
Standard QF flanges have bore (tube) sizes that range from 16mm to 50mm (QF16 to QF50). In addition, A&N offers a range of QF flanges from 63 to 200mm. QF flanges are fastened with quick style clamps and are sealed with an elastomeric o-ring. LF flanges have bore (tube) sizes that range from 63mm to 500mm (LF63 to LF500). LF style flanges are fastened with claw-style clamps or with bolts. Adaptive bolt rings are available that allow the conversion from claw-style flanges to bolt-style flanges. LF flanges are also sealed with an elastomeric o-ring.