Commercial Plastic Cross-Reference Chart

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Fed. Spec. WW-P-541/1A Type C Seats
CFWC = Closed Front Seat With Cover,    CFLC = Closed Front Seat Less Cover
OFWC = Open Front Seat With Cover,    OFLC = Open Front Seat Less Cover
* Indicates a DuraGuard® antimicrobial seat
Seat Type Bemis Church Beneke Centoco Kohler Olsonite Sperzel Type Class

Regular Bowl                  
OFWC 950
850TT
75
320
35TT
75
421
81
401TM
--
460TM
210
K4660
--
--
42
32
92
--
--
405R
II
--
11
2
--
2
CFWC 800B 3B -- -- -- -- -- -- --
OFLC 955C 397C 423 300C K4680C 5CC SMIRCH II 4
Elongated Bowl                  
OFWC 1950
1850TT
175
1950SS
1250TT
290TL
135TT
175
293SS
390TL
521
421
501TM
521HPSS
521
--
820TM
620
--
--
K4650
--
--
--
--
46
36
96
46SSRC
46
--
--
405E
--
--
III/IV
IV
IV
--
III/IV
2
2
2
--
2
CFWC 1900SS 383SS 520SS -- -- 44SSRC -- IV 1
OFLC 9400C
1655C
1955C
1055C
9400C
9500C
295C
255C
--
527
523/533
--
--
--
1500CC
500CC
--
K4666C
K4670C
--
95C
--
10CC
--
--
--
--
755EWCH
IV
IV
IV
IV
4
4
4
4
Infacnt Bowl                  
OFLC BB955C 1580C 323-5 -- -- 126CC 250 -- --
Regular Bowl DuraGuard®                  
OFWC 2050* 2050* 421HPSSPC -- -- 42SSTLAM -- -- --
OFLC 2055C* 2055C* 423PC -- -- 5CCAM -- -- --
Elongated Bowl DuraGuard®                  
OFWC 2150* 2150* 521HPSSPC AM8202ST -- 46SSTLAM -- -- --
CFWC 2100* 2100* 520HPSSPC -- -- 44SSTLAM -- -- --
OFLC 2155C*
3155C*
2155C*
3155C*
523PC
527PC
--
--
--
--
10CCAM
--
--
--
--
--
--
--
Elongated Bowl FirePro™                  
OFLC 1955CFR* -- 523PC/FR -- -- 10CC/FR/AM 150EWCH -- --