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BT-AR

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Item	Description
1.1	Seal face
1.2	Bellows
1.3	Collar
1.4	Locking ring
1.5	Spring
1.6	Drive ring
2.1	Stationary seat
2.2	Gasket

BT-AR

PDF data sheet

Features

Single and dual seal
For plain shafts
Elastomer bellows rotating
Unbalanced
Independent of direction of rotation
Available in metric and imperial sizes

Advantages

Shaft protection over entire seal length
Short axial length
High volume seal for use in low pressure, small diameter rotary shaft applications
High flexibility thanks to extended selection of materials
Best quality/price ratio
Dimensions can be customized
Additional seats available

Notes The BT-AR can also be used as a multiple seal in tandem or back-to-back arrangement. Installation suggestions are available upon request.

Dimensional adaptations for special conditions, such as inch shafts, different axial lengths, or specific seat dimensions are available upon request.

Operating range

Shaft diameter: d1 = 6 … 70 mm (0.24" … 2.76")
Pressure: p1* = 6 bar (87 PSI),
vacuum … 0.5 bar (7.25 PSI) up to 1 bar (14.5 PSI) with seat locking
Temperature:
t* = -20 °C … +120 °C (-4 °F … +248 °F)
Sliding velocity: vg = 10 m/s (33 ft/s)

* Dependent on medium, size and material

Materials

Seal face:
Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Carbon graphite, full carbon (B3), Silicon carbide (Q1, Q6), Tungsten carbide (U), PTFE glass fiber reinforced (Y1)), PTFE carbon reinforced (Y2)
Seat:
Al-oxide (V, V1), Silicon carbide (Q1, Q6, Q7), Tungsten carbide (U), Cr steel (E), CrNi steel (F1), CrNiMo steel (G)
Elastomers:
NBR (P), EPDM (E), FKM (V), HNBR (X4)
Metal parts:
CrNi steel 1.4301 (F), CrNiMo steel 1.4401 (G), CrNi steel 1.4057 (F1)

Standards and approvals

UBA
W270
ACS
WRAS
NSF
DM 174/04
FDA
EC 1935/2004
Various material approvals (depending on type and material combinations). Please inquire!

Recommended applications

Water and wastewater technology
Whirlpool and swimming pool pumps
Domestic appliances
Dishwasher pumps
Submersible pumps
Circulating pumps
Low duty water pumps

Product variants

BT-AR4

Item and description as for type BT-AR, but with shrink fitted seal face to the seal face carrier. Shaft diameter: d1 = 25 … 70 mm (0.98" … 2.76").

Similar products

AX05

Unbalanced
Independent on direction of rotation

BT-A2

Unbalanced
Single spring
Independent of direction of rotation
Stationary spring-loaded unit

BT-ARP

For plain shafts
Elastomer bellows rotating
Unbalanced
Single seal
Independent of direction of rotation
protected spring

Back to overview

d₁	d₁	d₃	d₄	d₆	d₇	l₃	tol	l₄	l₅	l₆	Note
3/8"	9.53	24	27	12	25.40	11.0	+0.5/0	5.5	0.5	4.5	X06
3/8"	9.53	24	27	12	25.40	11.0	+0.5/0	7.5	1.0	5.5	X06
1/2"	12.70	24	27	15	25.40	12.8	+0.7/0	7.5	1.0	5.5	X08
1/2"	12.70	24	27	15	25.40	16.3	+0.7/0	8.0	1.0	6.0	X08
5/8"	15.88	32	35	18	31.75	12.8	+0.7/0	10.3	1.0	8.0	X10
5/8"	15.88	32	35	18	30,95	12.8	+0.7/0	10.3	1.0	8.0	X10
3/4"	19.05	35	39	21	35.00	19.00	+0.7/0	10.3	1.0	8.0	X12

BT-AR - Dimensions in inch/millimeter

d₁	d₃	d₄	d₆	d₇	l₃	tol	l₄	l₅	l₆	Note
6	18	23	8	22.0	8.0	+0.5/0	4.0	0.5	3.5	8S (std version)
6	18	21	8	18.0	8.0	+0.5/0	4.8	0.5	3.5	8R
8	20	23	10	22.0	11.0	+0.5/0	4.8	0.5	3.5	12C (short version)
8	18	23	10	22.0	11.0	+0.5/0	4.0	0.5	3.5	(std version)
10	24	27	12	26.0	11.0	+0.5/0	8.0	1.0	6.0	14S (std version)
10	24	27	12	26.0	11.0	+0.5/0	5.5	0.5	4.5	14S (std version)
11	24	27	13	26.0	11.0	+0.5/0	8.0	1.0	6.0	14L (long version)
11	24	27	13	26.0	11.0	+0.5/0	5.5	0.5	4.5	14L (long version)
12	24	27	14	26.0	11.0	+0.5/0	8.0	1.0	6.0	16R (std version)
12	24	27	14	26.0	11.0	+0.5/0	5.5	0.5	4.5	20R (std version)
12	24	27	14	26.0	12.8	+0.7/0	8.0	1.0	6.0	25R (std version)
12	24	27	14	26.0	12.8	+0.7/0	5.0	0.5	4.5
13	24	27	15	26.0	12.8	+0.7/0	8.0	1.0	6.0
13	24	27	15	26.0	12.8	+0.7/0	5.5	0.5	4.5
14	28	31	18	28.5	12.8	+0.7/0	7.5	1.0	5.5
14	28	31	18	29.5	12.8	+0.7/0	8.0	1.0	6.0
14	28	31	18	28.5	15.3	±0.8	7.5	1.0	5.5
14	32	31	16	25.0	15.3	±0.8	7.3	1.0	5.5
15	32	35	17	29.5	12.8	+0.7/0	8.0	1.0	6.0
15	32	35	17	30.0	12.8	+0.7/0	6.0	1.0	4.0
15	32	40	17	38.0	12.8	+0.7/0	8.0	1.0	6.0
16	32	35	18	29.5	12.8	+0.7/0	8.0	1.0	6.0
16	32	35	18	30.0	12.8	+0.7/0	6.0	1.0	4.0
16	32	40	17	38.0	12.8	+0.7/0	8.0	1.0	6.0
17	39	43	19	42.0	12.8	+0.7/0	8.0	1.0	6.0
18	39	43	20	42.0	12.8	+0.7/0	8.0	1.0	6.0
19	39	43	21	42.0	12.8	+0.7/0	8.0	1.0	6.0
20	35	39	22	35.0	17.8	±0.7	7.5	1.0	5.5
20	39	43	22	42.0	12.8	+0.7/0	8.0	1.0	6.0
22	42	47	24	45.0	12.8	+0.7/0	10.0	1.0	8.0
24	47	52	26	50.0	13.5	+1/0	10.0	1.0	8.0
25	42	52	27	50.0	13.5	+1/0	10.0	1.0	8.0
25	42	47	27	45.0	13.5	+1/0	10.0	1.0	8.0
25	47	52	27	50.0	13.5	+1/0	10.0	1.0	8.0
27	47	52	30	50.0	13.5	+1/0	10.0	1.0	8.0
28	54	60	31	57.0	15.0	+1/0	10.0	1.0	8.0
30	54	60	33	57.0	15.0	+1/0	10.0	1.0	8.0
32	54	60	35	57.0	15.0	+1/0	10.0	1.0	8.0
35	60	70	38	63.0	16.0	+1/0	10.0	1.0	8.0
38	65	75	41	68.0	18.0	+1/0	12.0	2.0	9.0
40	65	75	43	68.0	18.0	+1/0	12.0	2.0	9.0
45	70	80	48	73.0	20.0	+1/0	12.0	2.0	9.0
50	85	95	53	88.0	23.0	+1/0	15.0	2.0	12.0
60	105	115	63	110.0	30.0	+1/0	15.0	2.0	12.0
70	105	115	73	110.0	32.0	+1/0	15.0	2.0	12.0

Dimensions in millimeter