Piston seal Prädifa series B7, Ultrathan®

Where to Buy

Piston seal for hydraulic cylinders, single-acting, polyurethane u-cup design. For high-pressure applications. Robust seal profile for harshest operating conditions. ISO 5597, ISO 6020.

Technical Specifications

Pressure Rating: Standard moderate Temperature (-35 C to 100 C)
Thermal Application Type: High Temperature (< 205°C), Standard Moderate Temperature (-35 to 100°C), Low Temperature (< -35 C)
Media: Hydraulic
Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
Maximum Operating Pressure: 400 bar, 250 bar
Minimum Operating Temperature: -45 to -20 °C
Maximum Operating Temperature: 80 to 110 °C
Maximum Surface Speed: 0.5 m/sec, 1.0 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No

Safety Warning

Full Product Description

The B7 Ultrathan® piston seal is a lip seal with interference fit. It is extremely wear resistant, ensures reliable load holding and is suitable for hydraulic high-pressure applications.

• Robust seal profile for harshest operating conditions.
• Extreme wear resistance.
• Easier installation.
• Suitable for fully automatic installation
• Assembly on one-part piston is possible.
• Insensitive to pressure peaks.
• High extrusion resistance.
• Excellent media resistance in case of suitable compound selection.
• Suitable compounds available for special requirements of the chemical process industry.
• Suitable compounds available for special requirements of the food processing industry.
• Dimensions according to ISO 5597.
• Installation in closed and undercut housings.
• Further dimensions of machined series with short lead times available.

Range of application:
Mainly for the sealing of pistons in heavy duty applications in mobile and stationary hydraulics.

Related Documents

Literature and Reference Materials
Hydraulic Seals--PTD3350
Compound Data Sheet TPU P5008
Installation Guidelines for Piston Seals--PTD3350
Storage and Cleaning of Elastomer Seals--PTD3032
Ultrathan®--Piston seal B7--PTD3350

Product Demos & Tutorials
How to Properly Store and Clean Elastomer Seals
Mixing the right ingredients: Material Development at Parker-Prädifa
Parker Final Exam in Physics / Sealing Systems Put to the Test

Communities, Blogs & Industry Links
Industry Hydraulics
Industry Pneumatics

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Showing 1 to 100 of 123 entries

Products	Outside Diameter (mm)	Inside Diameter (mm)	Element Height (mm)	Groove Width	Minimum Working Temperature (C)	Maximum Working Temperature (C)	Seal Material	Outside Diameter (mm)	Inside Diameter (mm)	Element Height (mm)	Groove Width	Minimum Working Temperature (C)	Maximum Working Temperature (C)	Seal Material
B7A080P5008	100	80	14.5	16	-35	100	P5008	1__100 __1	2__80 __2	3__14.5 __3	4__16 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7A085P5008	100	85	11.4	12.5	-35	100	P5008	1__100 __1	2__85 __2	3__11.4 __3	4__12.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7A085P5010	100	85	11.4	12.5	-30	80	P5010	1__100 __1	2__85 __2	3__11.4 __3	4__12.5 __4	5__-30 __5	6__80 __6	7__P5010 __7
B7A090P5008	100	90	6.7	7.5	-35	100	P5008	1__100 __1	2__90 __2	3__6.7 __3	4__7.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7A090P5600	100	90	6.7	7.5	-25	85	P5600	1__100 __1	2__90 __2	3__6.7 __3	4__7.5 __4	5__-25 __5	6__85 __6	7__P5600 __7
B7A090P6000	100	90	6.7	7.5	-35	110	P6000	1__100 __1	2__90 __2	3__6.7 __3	4__7.5 __4	5__-35 __5	6__110 __6	7__P6000 __7
B7B004P5008	110	90	15	16.5	-35	100	P5008	1__110 __1	2__90 __2	3__15 __3	4__16.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7B004P6030	110	90	15	16.5	-35	110	P6030	1__110 __1	2__90 __2	3__15 __3	4__16.5 __4	5__-35 __5	6__110 __6	7__P6030 __7
B7B008P5008	110	90	8	9	-35	100	P5008	1__110 __1	2__90 __2	3__8 __3	4__9 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7B008P5009	110	90	8	9	-30	80	P5009	1__110 __1	2__90 __2	3__8 __3	4__9 __4	5__-30 __5	6__80 __6	7__P5009 __7
B7B050P5008	115	98	14.5	16	-35	100	P5008	1__115 __1	2__98 __2	3__14.5 __3	4__16 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7C050P5008	121	111.1	9.5	10.5	-35	100	P5008	1__121 __1	2__111.1 __2	3__9.5 __3	4__10.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7C050P5009	121	111.1	9.5	10.5	-30	80	P5009	1__121 __1	2__111.1 __2	3__9.5 __3	4__10.5 __4	5__-30 __5	6__80 __6	7__P5009 __7
B7C120P5008	120	105	11.4	12.5	-35	100	P5008	1__120 __1	2__105 __2	3__11.4 __3	4__12.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7C210P5008	125	100	18.2	20	-35	100	P5008	1__125 __1	2__100 __2	3__18.2 __3	4__20 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7C215P5008	125	105	14.5	16	-35	100	P5008	1__125 __1	2__105 __2	3__14.5 __3	4__16 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7C215P5010	125	105	14.5	16	-30	80	P5010	1__125 __1	2__105 __2	3__14.5 __3	4__16 __4	5__-30 __5	6__80 __6	7__P5010 __7
B7C219P5008	125	110	9.6	10.6	-35	100	P5008	1__125 __1	2__110 __2	3__9.6 __3	4__10.6 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7C219P6000	125	110	9.6	10.6	-35	110	P6000	1__125 __1	2__110 __2	3__9.6 __3	4__10.6 __4	5__-35 __5	6__110 __6	7__P6000 __7
B7D115P5212	130	115	9.6	10.6	-35	100	P5212	1__130 __1	2__115 __2	3__9.6 __3	4__10.6 __4	5__-35 __5	6__100 __6	7__P5212 __7
B7E010P5008	140	120	12	13	-35	100	P5008	1__140 __1	2__120 __2	3__12 __3	4__13 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7E050P5008	145	115	18	20	-35	100	P5008	1__145 __1	2__115 __2	3__18 __3	4__20 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7F024P5008	152.4	136.5	10	11	-35	100	P5008	1__152.4 __1	2__136.5 __2	3__10 __3	4__11 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7G035P5008	160	135	18.2	20	-35	100	P5008	1__160 __1	2__135 __2	3__18.2 __3	4__20 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7G040P5008	160	140	14.5	16	-35	100	P5008	1__160 __1	2__140 __2	3__14.5 __3	4__16 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7H050P5008	170	150	14.5	16	-35	100	P5008	1__170 __1	2__150 __2	3__14.5 __3	4__16 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7J004P5008	180	150	18	20	-35	100	P5008	1__180 __1	2__150 __2	3__18 __3	4__20 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7L007P5008	200	170	22.7	25	-35	100	P5008	1__200 __1	2__170 __2	3__22.7 __3	4__25 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7L010P5008	200	175	18.2	20	-35	100	P5008	1__200 __1	2__175 __2	3__18.2 __3	4__20 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7L013P5008	200	185	9.6	10.6	-35	100	P5008	1__200 __1	2__185 __2	3__9.6 __3	4__10.6 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7M020P5008	220	200	15	16.5	-35	100	P5008	1__220 __1	2__200 __2	3__15 __3	4__16.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7N010P5008	240	215	15	16.5	-35	100	P5008	1__240 __1	2__215 __2	3__15 __3	4__16.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7N120P5008	250	220	22.7	25	-35	100	P5008	1__250 __1	2__220 __2	3__22.7 __3	4__25 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7N125P5008	250	225	18.2	20	-35	100	P5008	1__250 __1	2__225 __2	3__18.2 __3	4__20 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7N130P5008	250	230	15	16.5	-35	100	P5008	1__250 __1	2__230 __2	3__15 __3	4__16.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B7Q210P5008	320	290	20	22	-35	100	P5008	1__320 __1	2__290 __2	3__20 __3	4__22 __4	5__-35 __5	6__100 __6	7__P5008 __7
B71308P5010	13	8	4.2	4.7	-30	80	P5010	1__13 __1	2__8 __2	3__4.2 __3	4__4.7 __4	5__-30 __5	6__80 __6	7__P5010 __7
B71408P5010	14	8	5.7	6.3	-30	80	P5010	1__14 __1	2__8 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5010 __7
B71504P5010	15	10	4.2	4.7	-30	80	P5010	1__15 __1	2__10 __2	3__4.2 __3	4__4.7 __4	5__-30 __5	6__80 __6	7__P5010 __7
B71608P5008	16	8	5.7	6.3	-35	100	P5008	1__16 __1	2__8 __2	3__5.7 __3	4__6.3 __4	5__-35 __5	6__100 __6	7__P5008 __7
B71608P5010	16	8	5.7	6.3	-30	80	P5010	1__16 __1	2__8 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5010 __7
B71609P5010	16	10	4.5	5	-30	80	P5010	1__16 __1	2__10 __2	3__4.5 __3	4__5 __4	5__-30 __5	6__80 __6	7__P5010 __7
B71610P5008	16	10	5.7	6.3	-35	100	P5008	1__16 __1	2__10 __2	3__5.7 __3	4__6.3 __4	5__-35 __5	6__100 __6	7__P5008 __7
B71610P5010	16	10	5.7	6.3	-30	80	P5010	1__16 __1	2__10 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5010 __7
B71810P5010	18	10	5.7	6.3	-30	80	P5010	1__18 __1	2__10 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5010 __7
B72011P5008	20	12	4.2	4.7	-35	100	P5008	1__20 __1	2__12 __2	3__4.2 __3	4__4.7 __4	5__-35 __5	6__100 __6	7__P5008 __7
B72012P5008	20	12	5.7	6.3	-35	100	P5008	1__20 __1	2__12 __2	3__5.7 __3	4__6.3 __4	5__-35 __5	6__100 __6	7__P5008 __7
B72012P5080	20	12	5.7	6.3	-40	85	P5080	1__20 __1	2__12 __2	3__5.7 __3	4__6.3 __4	5__-40 __5	6__85 __6	7__P5080 __7
B72012P5600	20	12	5.7	6.3	-25	85	P5600	1__20 __1	2__12 __2	3__5.7 __3	4__6.3 __4	5__-25 __5	6__85 __6	7__P5600 __7
B72015P5008	25	15	7.3	8	-35	100	P5008	1__25 __1	2__15 __2	3__7.3 __3	4__8 __4	5__-35 __5	6__100 __6	7__P5008 __7
B72015P5600	25	15	7.3	8	-25	85	P5600	1__25 __1	2__15 __2	3__7.3 __3	4__8 __4	5__-25 __5	6__85 __6	7__P5600 __7
B74032P5009	40	32	5.7	6.3	-45	95	P5009	1__40 __1	2__32 __2	3__5.7 __3	4__6.3 __4	5__-45 __5	6__95 __6	7__P5009 __7
B74032P5010	40	32	5.7	6.3	-30	80	P5010	1__40 __1	2__32 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5010 __7
B74033P5008	40	33	8	9	-35	100	P5008	1__40 __1	2__33 __2	3__8 __3	4__9 __4	5__-35 __5	6__100 __6	7__P5008 __7
B74304P5008	43	33	7.3	8	-35	100	P5008	1__43 __1	2__33 __2	3__7.3 __3	4__8 __4	5__-35 __5	6__100 __6	7__P5008 __7
B74535P5008	45	35	7.3	8	-35	100	P5008	1__45 __1	2__35 __2	3__7.3 __3	4__8 __4	5__-35 __5	6__100 __6	7__P5008 __7
B75010P5008	50	35	10	11	-35	100	P5008	1__50 __1	2__35 __2	3__10 __3	4__11 __4	5__-35 __5	6__100 __6	7__P5008 __7
B75016P5008	50	42	5.7	6.3	-35	100	P5008	1__50 __1	2__42 __2	3__5.7 __3	4__6.3 __4	5__-35 __5	6__100 __6	7__P5008 __7
B75040P5008	50	40	7.3	8	-35	100	P5008	1__50 __1	2__40 __2	3__7.3 __3	4__8 __4	5__-35 __5	6__100 __6	7__P5008 __7
B75040P5009	50	40	7.3	8	-45	95	P5009	1__50 __1	2__40 __2	3__7.3 __3	4__8 __4	5__-45 __5	6__95 __6	7__P5009 __7
B75040P5010	50	40	7.3	8	-30	80	P5010	1__50 __1	2__40 __2	3__7.3 __3	4__8 __4	5__-30 __5	6__80 __6	7__P5010 __7
B75040P5600	50	40	7.3	8	-25	85	P5600	1__50 __1	2__40 __2	3__7.3 __3	4__8 __4	5__-25 __5	6__85 __6	7__P5600 __7
B75041P5008	50	40	10	11	-35	100	P5008	1__50 __1	2__40 __2	3__10 __3	4__11 __4	5__-35 __5	6__100 __6	7__P5008 __7
B75043P5008	50.8	41.17	6.2	7	-35	100	P5008	1__50.8 __1	2__41.17 __2	3__6.2 __3	4__7 __4	5__-35 __5	6__100 __6	7__P5008 __7
B75209P5008	52	42	7.3	8	-35	100	P5008	1__52 __1	2__42 __2	3__7.3 __3	4__8 __4	5__-35 __5	6__100 __6	7__P5008 __7
B75409P5008	54	44	7.3	8	-35	100	P5008	1__54 __1	2__44 __2	3__7.3 __3	4__8 __4	5__-35 __5	6__100 __6	7__P5008 __7
B75409P6000	54	44	7.3	8	-35	110	P6000	1__54 __1	2__44 __2	3__7.3 __3	4__8 __4	5__-35 __5	6__110 __6	7__P6000 __7
B75545P5008	55	45	7.3	8	-35	100	P5008	1__55 __1	2__45 __2	3__7.3 __3	4__8 __4	5__-35 __5	6__100 __6	7__P5008 __7
B75703P5009	57	41	11.4	12.5	-45	95	P5009	1__57 __1	2__41 __2	3__11.4 __3	4__12.5 __4	5__-45 __5	6__95 __6	7__P5009 __7
B76009P5008	60	50	10	11	-35	100	P5008	1__60 __1	2__50 __2	3__10 __3	4__11 __4	5__-35 __5	6__100 __6	7__P5008 __7
B76032P5008	63	48	8.6	9.5	-35	100	P5008	1__63 __1	2__48 __2	3__8.6 __3	4__9.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B76050P5000	60	50	7.3	8	-20	100	P5000	1__60 __1	2__50 __2	3__7.3 __3	4__8 __4	5__-20 __5	6__100 __6	7__P5000 __7
B76050P5008	60	50	7.3	8	-35	100	P5008	1__60 __1	2__50 __2	3__7.3 __3	4__8 __4	5__-35 __5	6__100 __6	7__P5008 __7
B76055P5008	65	55	7.3	8	-35	100	P5008	1__65 __1	2__55 __2	3__7.3 __3	4__8 __4	5__-35 __5	6__100 __6	7__P5008 __7
B76055P6000	65	55	7.3	8	-35	110	P6000	1__65 __1	2__55 __2	3__7.3 __3	4__8 __4	5__-35 __5	6__110 __6	7__P6000 __7
B76348P5008	63	48	11.4	12.5	-35	100	P5008	1__63 __1	2__48 __2	3__11.4 __3	4__12.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B76353P5008	63	53	7.3	8	-35	100	P5008	1__63 __1	2__53 __2	3__7.3 __3	4__8 __4	5__-35 __5	6__100 __6	7__P5008 __7
B76353P5009	63	53	7.3	8	-45	95	P5009	1__63 __1	2__53 __2	3__7.3 __3	4__8 __4	5__-45 __5	6__95 __6	7__P5009 __7
B76353P5600	63	53	7.3	8	-25	85	P5600	1__63 __1	2__53 __2	3__7.3 __3	4__8 __4	5__-25 __5	6__85 __6	7__P5600 __7
B76355P5008	63	55	5.7	6.3	-35	100	P5008	1__63 __1	2__55 __2	3__5.7 __3	4__6.3 __4	5__-35 __5	6__100 __6	7__P5008 __7
B76805P5008	68	58	9.5	10.5	-35	100	P5008	1__68 __1	2__58 __2	3__9.5 __3	4__10.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B77011P5008	70	60	7.5	8.5	-35	100	P5008	1__70 __1	2__60 __2	3__7.5 __3	4__8.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B77012P5008	70	60	12	13	-35	100	P5008	1__70 __1	2__60 __2	3__12 __3	4__13 __4	5__-35 __5	6__100 __6	7__P5008 __7
B77027P5008	75	63	8.7	9.5	-35	100	P5008	1__75 __1	2__63 __2	3__8.7 __3	4__9.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B78008P5008	80	65	8.6	9.5	-35	100	P5008	1__80 __1	2__65 __2	3__8.6 __3	4__9.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B78008P6000	80	65	8.6	9.5	-35	110	P6000	1__80 __1	2__65 __2	3__8.6 __3	4__9.5 __4	5__-35 __5	6__110 __6	7__P6000 __7
B78008P6030	80	65	8.6	9.5	-35	110	P6030	1__80 __1	2__65 __2	3__8.6 __3	4__9.5 __4	5__-35 __5	6__110 __6	7__P6030 __7
B78010P5008	80	70	6.7	7.5	-35	100	P5008	1__80 __1	2__70 __2	3__6.7 __3	4__7.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B78011P5008	80	70	12	13	-35	100	P5008	1__80 __1	2__70 __2	3__12 __3	4__13 __4	5__-35 __5	6__100 __6	7__P5008 __7
B78060P5008	80	60	14.5	16	-35	100	P5008	1__80 __1	2__60 __2	3__14.5 __3	4__16 __4	5__-35 __5	6__100 __6	7__P5008 __7
B78065P5008	80	65	11.4	12.5	-35	100	P5008	1__80 __1	2__65 __2	3__11.4 __3	4__12.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B79075P5008	90	75	11.4	12.5	-35	100	P5008	1__90 __1	2__75 __2	3__11.4 __3	4__12.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B79580P5008	95	80	11.4	12.5	-35	100	P5008	1__95 __1	2__80 __2	3__11.4 __3	4__12.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B72212P5008	22	12	8	9	-35	100	P5008	1__22 __1	2__12 __2	3__8 __3	4__9 __4	5__-35 __5	6__100 __6	7__P5008 __7
B72214P5010	22	14	5.5	6.1	-30	80	P5010	1__22 __1	2__14 __2	3__5.5 __3	4__6.1 __4	5__-30 __5	6__80 __6	7__P5010 __7
B72416P5008	24	16	5.7	6.3	-35	100	P5008	1__24 __1	2__16 __2	3__5.7 __3	4__6.3 __4	5__-35 __5	6__100 __6	7__P5008 __7
B72516P5008	25	17	4.5	5	-35	100	P5008	1__25 __1	2__17 __2	3__4.5 __3	4__5 __4	5__-35 __5	6__100 __6	7__P5008 __7
B72517P5008	25	17	5.7	6.3	-35	100	P5008	1__25 __1	2__17 __2	3__5.7 __3	4__6.3 __4	5__-35 __5	6__100 __6	7__P5008 __7
B72517P5080	25	17	5.7	6.3	-40	85	P5080	1__25 __1	2__17 __2	3__5.7 __3	4__6.3 __4	5__-40 __5	6__85 __6	7__P5080 __7
B72517P5600	25	17	5.7	6.3	-25	85	P5600	1__25 __1	2__17 __2	3__5.7 __3	4__6.3 __4	5__-25 __5	6__85 __6	7__P5600 __7

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Piston seal Prädifa series B7, Ultrathan® | Product Series

Outside Diameter (mm)

Inside Diameter (mm)

Element Height (mm)

Groove Width

Minimum Working Temperature (C)

Maximum Working Temperature (C)

Seal Material

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Piston seal Prädifa series B7, Ultrathan®

Technical Specifications

Full Product Description

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