Diameter 51 mm
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Helix 51 PE + BK5 PCR
51 mm | PCR Material | 5 mm tear-off ring | 4 mm sealing ring
Helix 51 PE3 + BK5
51 mm | PCR Material | 5 mm tear-off ring | 4 mm sealing ring
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Helix 51 PE3 + D17 + BK5
51 mm | Gore D17 | 5 mm tear-off ring | 3 mm sealing ring
Helix 51 PE4 + BK5
51 mm | Sealing inlay | PCR Material | without tear-off ring | 4 mm sealing ring
Helix Key 51
51 mm | PCR Material | without tear-off ring | without sealing ring