Spare o-rings for Divesoft BOV, the set includes: 

2x #2126 o-ring 37x2 EPDM 70SH

2x #2130 o-ring 41x2 EPDM 70SH

4x #2133 o-ring 21x2 EPDM 70SH

4x #2152 o-ring 21x2 MVQ 70SH

4x #2153 o-ring 37x2 MVQ 70SH

2x #2154 o-ring 41x2 MVQ 70SH

2x #2341 o-ring 16x2 MVQ 70SH

4x #2065 o-ring 21x2 NBR70

2x #2103 o-ring 41x2 NBR70

4x #2080 o-ring 37x2 NBR70

Necessary to use only with Krytox GPL-201 in Divesoft BOV.