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Interchange chart
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INTERCHANGE CODES
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STYLE
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STYLE
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STYLE
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STYLE
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STYLE
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STYLE
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R21
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R23
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R4
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R6
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R1
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Semi-Dual
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BIRMINGHAM SEALS
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SC
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TC
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SB
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TB
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RI
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Semi-Dual
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DIN3760
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A
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AS
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B
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BS
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C
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CS
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CFW (SIMIRIT)
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BA
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BASL
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B1
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B1 SL
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B2
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B2 SL
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GOETZE
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827N
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827S
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822N
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822S
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824N
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824S
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KACO
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DG
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DGS
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DF
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DFS
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SFK
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DFSK
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STEFA
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CB
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CC
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BB
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BC
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DB
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DC
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DESCRIPTION
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STYLE
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Rubber covered case single lip
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R21
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Rubber covered case sinlge lip with wiper
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R23
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Metal case single lip
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R4
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Metal case single lip with wiper
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R6
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Totally metal enclosed (leather or rubber lip) Single
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R1
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Totally metal enclosed Single lip with wiper
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Semi-Dual
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