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BT-C8.KU

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Item	Description
1.1	Seal face
1.2	Collar
1.3	O-Ring
1.4	O-Ring
1.5	Spring
1.6	Driver
1.7	Set screw
2.1	Seat
2.2	O-ring

BT-C8.KU

PDF data sheet

Features

Single seal
For plain shafts
Unbalanced
Super-sinus spring rotating
Independent of direction of rotation

Advantages

Universal application opportunities
Reliable design
Insensitive to low solid content
Torque transmission by set screws

Operating range

Shaft diameter:
d1 = 16 … 100 mm (0.63" … 3.94")
Pressure: p1* = 12 bar (16 bar) (174 PSI)
Temperature:
t* = -35 °C … +180 °C (-31 °F … +356 °F)
Sliding velocity: vg = 20 m/s (66 ft/s)

* Dependent on medium, size and material

Materials

Seal face:
Silicon carbide (Q1), Al-oxide (V)
Seat:
Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1, Q6, Q7)
Elastomers:
NBR (P), EPDM (E), FKM (V), FFKM (K)
Metal parts: CrNiMo steel 1.4401 (G)

Standards and approvals

Various material approvals are available, depending on the type of material combinations, e.g. WRAS, UBA, ACS, NSF, FDA. Please inquire!

EN 12756

Recommended applications

Water and wastewater technology
Building services industry
Chemical industry
Process industry
Food and Beverage industry
Low solid content media
Centrifugal pumps
Multistage pumps
Cooling water pumps

Notes

Alternative seat ring can be supplied with short tail or long tail with slot for pin (to prevent seat rotation).

Similar products

AX25

External configuration
Balanced
Independent of direction of rotation
Independent of pressure direction

AX40K

Stationary springs
Balanced
Independent of direction of rotation
Independent of pressure direction

BT-C5E

Single seal
For plain shafts
Unbalanced
Multiple springs, rotating
Independent of direction of rotation

Back to overview

d₁	d₃	d₄	d₆	d₇	d₈	l_1KU	l₃	l₄	l₅	l₆	l₇
12	23	26	19	23	3	32.5	25.5	7	1.5	4	8.5
14	26	28	21	25	3	35.0	28.0	7	1.5	4	8.5
16	30	32	23	27	3	35.0	28.0	7	1.5	4	8.5
18	33	36	27	33	3	37.5	27.5	10	2.0	5	9.0
20	33	37	29	35	3	37.5	27.5	10	2.0	5	9.0
22	38	41	31	37	3	37.5	27.5	10	2.0	5	9.0
24	38	41	33	39	3	40.0	30.0	10	2.0	5	9.0
25	40	43	34	40	3	40.0	30.0	10	2.0	5	9.0
28	46	50	37	43	3	42.5	32.5	10	2.0	5	9.0
30	46	50	39	45	3	42.5	32.5	10	2.0	5	9.0
32	46	50	42	48	3	42.5	32.5	10	2.0	5	9.0
33	52	57	42	48	3	42.5	32.5	10	2.0	5	9.0
35	56	62	44	50	3	42.5	32.5	10	2.0	5	9.0
38	63	67	49	56	4	45.0	32.0	13	2.0	6	9.0
40	63	67	51	58	4	45.0	32.0	13	2.0	6	9.0
43	63	67	54	61	4	45.0	32.0	13	2.0	6	9.0
45	69	73	56	63	4	45.0	32.0	13	2.0	6	9.0
48	69	73	59	66	4	45.0	32.0	13	2.0	6	9.0
50	76	80	62	70	4	47.5	33.5	14	2.5	6	9.0
53	76	80	65	73	4	47.5	33.5	14	2.5	6	9.0
55	76	80	67	75	4	47.5	33.5	14	2.5	6	9.0
58	82	87	70	78	4	52.5	38.5	14	2.5	6	9.0
60	84	90	72	80	4	52.5	38.5	14	2.5	6	9.0
63	86	93	75	83	4	52.5	38.5	14	2.5	6	9.0
65	89	96	77	85	4	52.5	38.5	14	2.5	6	9.0
68	92	99	81	90	4	52.5	36.5	16	2.5	7	9.0
70	95	101	83	92	4	60.0	44.0	16	2.5	7	9.0
75	100	106	88	97	4	60.0	44.0	16	2.5	7	9.0
80	105	111	95	105	4	60.0	42.0	18	3.0	7	9.0
85	115	125	100	110	4	60.0	42.0	18	3.0	7	9.0
90	120	130	105	115	4	65.0	47.0	18	3.0	7	9.0
95	126	137	110	120	4	65.0	47.0	18	3.0	7	9.0
100	130	143	115	125	4	65.0	47.0	18	3.0	7	9.0

d~3~, d~4~ dimensions not always in accordance with EN 12756 l1KU complies with EN 12756 (short length, unbalanced) **BT-C8.KU** - Dimensions in millimeter