Symmetrical Rod and Piston Seal Prädifa series BA, Ultrathan®

Where to Buy

Rod seal for hydraulic cylinders, single-acting, polyurethane compact PARK-O-PAK® design. For high-pressure applications. Robust seal profile for harsh operating conditions.

Technical Specifications

Inside Diameter: 3 to 980 mm
Outside Diameter: 8.5 to 1005 mm
Thermal Application Type: Expanded Low and High Temperature (< -35 to 140°C), High Temperature (< 205°C), Low Temperature (< -35 C), Standard Moderate Temperature (-35 to 100°C)
Pressure Rating: High Pressure (< 500 bar), Low Pressure (< 160 bar)
Media: Hydraulic
Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®), Thermoplastic Copolyester Elastomer (TPC, TPE), Nitrile Butadiene Rubber (NBR, XNBR), Fluorocarbon Rubber (FKM, FPM), Ethylene Propylene Rubber (EPM, EPR, EPDM)
Maximum Operating Pressure: 350 bar
Minimum Operating Temperature: -50 to -20 °C
Maximum Operating Temperature: 80 to 200 °C
Maximum Surface Speed: 0.5 m/sec
Unit of Measure: Length: mm
Cushioning Mechanism: No

Safety Warning

Full Product Description

The PARK-O-PAK® rod seal BA made of wear-resistant Ultrathan® is a compact seal design for hydraulic applications. Due to its symmetric design, the seal can also be used as a piston seal.
The O-ring guarantees the pre-loading of the seal lips, even under low pressures or vacuum. Due to the good setting behavior of the elastomer O-ring, this pre-loading is largely constant. As system pressure increases, compression of the sealing edges rises due to the pressure-dependent deformation of the seal profile.

There are three variants of the PARK-O-PAK® product series. The product series BA is suitable for standard grooves, e.g. according to ISO 5597. The product series SA is suitable for axially short compact designs. The product series TA is suitable for radially slim designs, e.g. for telescopic cylinders.

• Robust seal profile for harshest operating conditions.
• Extreme wear resistance.
• Easier installation.
• 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.
• Installation in closed and undercut housings.
• Low compression set.
• Further dimensions of machined series with short lead times available.

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

The BA rod seal is available in the following compounds:
00030 - Industrial applications
00020 - Light-duty
00043 - Low temperatures
00064 - Heavy-duty

Related Documents

Literature and Reference Materials
Installation Guidelines for Piston Seals--PTD3350
Installation Guidelines for Rod Seals--PTD3350
Storage and Cleaning of Elastomer Seals--PTD3032

Product Demos & Tutorials
How to Properly Store and Clean Elastomer Seals
Mixing the right ingredients: Material Development at Parker-Prädifa

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Showing 1 to 100 of 252 entries

Products	Inside Diameter (mm)	Outside Diameter (mm)	Element Height (mm)	Groove Width	Minimum Working Temperature (C)	Maximum Working Temperature (C)	Seal Material	Inside Diameter (mm)	Outside Diameter (mm)	Element Height (mm)	Groove Width	Minimum Working Temperature (C)	Maximum Working Temperature (C)	Seal Material
BA002500030	3	8.5	4	4.5	-30	80	P5004	1__3 __1	2__8.5 __2	3__4 __3	4__4.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA002700070	3.18	9.53	6.3	6.900	-20	100	W5035	1__3.18 __1	2__9.53 __2	3__6.3 __3	4__6.900 __4	5__-20 __5	6__100 __6	7__W5035 __7
BA004400030	4.8	11.1	6.4	7	-30	80	P5004	1__4.8 __1	2__11.1 __2	3__6.4 __3	4__7 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA005200030	6	14	5.7	6.3	-30	80	P5004	1__6 __1	2__14 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA005700030	6.4	12.7	6.4	7	-30	80	P5004	1__6.4 __1	2__12.7 __2	3__6.4 __3	4__7 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA006800030	7.9	14.3	6.4	7	-30	80	P5004	1__7.9 __1	2__14.3 __2	3__6.4 __3	4__7 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA007300030	8	16	5.7	6.3	-30	80	P5004	1__8 __1	2__16 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA100300030	10	18	5.7	6.3	-30	80	P5004	1__10 __1	2__18 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA100300070	10	18	5.7	6.3	-20	100	W5035	1__10 __1	2__18 __2	3__5.7 __3	4__6.3 __4	5__-20 __5	6__100 __6	7__W5035 __7
BA100300240	10	18	5.7	6.3	-35	100	W5035	1__10 __1	2__18 __2	3__5.7 __3	4__6.3 __4	5__-35 __5	6__100 __6	7__W5035 __7
BA101500030	11.1	17.5	6.4	7	-30	80	P5004	1__11.1 __1	2__17.5 __2	3__6.4 __3	4__7 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA102300030	12	20	5.7	6.3	-30	80	P5004	1__12 __1	2__20 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA102700030	12	22	7.3	8	-30	80	P5004	1__12 __1	2__22 __2	3__7.3 __3	4__8 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA902700100	12	22	5	5.5	-40	100	W5035	1__12 __1	2__22 __2	3__5 __3	4__5.5 __4	5__-40 __5	6__100 __6	7__W5035 __7
BA103100060	12.7	19.05	4.5	5	-35	100	W5032	1__12.7 __1	2__19.05 __2	3__4.5 __3	4__5 __4	5__-35 __5	6__100 __6	7__W5032 __7
BA105300030	13	20	5	5.5	-30	80	P5004	1__13 __1	2__20 __2	3__5 __3	4__5.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA106800030	14	22	5.7	6.3	-30	80	P5004	1__14 __1	2__22 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA107300030	14	24	7.3	8	-30	80	P5004	1__14 __1	2__24 __2	3__7.3 __3	4__8 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA107600250	14	24	7.5	8.5	-20	200	V0747	1__14 __1	2__24 __2	3__7.5 __3	4__8.5 __4	5__-20 __5	6__200 __6	7__V0747 __7
BA108000030	14.3	20.6	6.4	7	-30	80	P5004	1__14.3 __1	2__20.6 __2	3__6.4 __3	4__7 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA108700030	15	23	5.7	6.3	-30	80	P5004	1__15 __1	2__23 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA111100030	16	22.2	4.5	5	-30	80	P5004	1__16 __1	2__22.2 __2	3__4.5 __3	4__5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA111500030	16	24	5.7	6.3	-30	80	P5004	1__16 __1	2__24 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA111900030	16	26	7.3	8	-30	80	P5004	1__16 __1	2__26 __2	3__7.3 __3	4__8 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA115000030	18	24	5	5.5	-30	80	P5004	1__18 __1	2__24 __2	3__5 __3	4__5.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA115600030	18	26	5.7	6.3	-30	80	P5004	1__18 __1	2__26 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA118600030	19.1	25.4	6.4	7	-30	80	P5004	1__19.1 __1	2__25.4 __2	3__6.4 __3	4__7 __4	5__-30 __5	6__80 __6	7__P5004 __7
BAM01800030	220	240	15	16.5	-30	80	P5004	1__220 __1	2__240 __2	3__15 __3	4__16.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BAN01800030	240	260	14.5	16	-30	80	P5004	1__240 __1	2__260 __2	3__14.5 __3	4__16 __4	5__-30 __5	6__80 __6	7__P5004 __7
BAN08200030	250	280	22.7	25	-30	80	P5004	1__250 __1	2__280 __2	3__22.7 __3	4__25 __4	5__-30 __5	6__80 __6	7__P5004 __7
BAO01500030	260.4	279.4	12.7	14	-30	80	P5004	1__260.4 __1	2__279.4 __2	3__12.7 __3	4__14 __4	5__-30 __5	6__80 __6	7__P5004 __7
BAO29800030	279.4	304.8	19.1	21	-30	80	P5004	1__279.4 __1	2__304.8 __2	3__19.1 __3	4__21 __4	5__-30 __5	6__80 __6	7__P5004 __7
BAP01600030	280	310	22.7	25	-30	80	P5004	1__280 __1	2__310 __2	3__22.7 __3	4__25 __4	5__-30 __5	6__80 __6	7__P5004 __7
BAP19600030	290	320	22.5	25	-30	80	P5004	1__290 __1	2__320 __2	3__22.5 __3	4__25 __4	5__-30 __5	6__80 __6	7__P5004 __7
BAQ12600030	311.2	342.9	25.4	28	-30	80	P5004	1__311.2 __1	2__342.9 __2	3__25.4 __3	4__28 __4	5__-30 __5	6__80 __6	7__P5004 __7
BAQ19000030	317.5	342.9	19.1	21	-30	80	P5004	1__317.5 __1	2__342.9 __2	3__19.1 __3	4__21 __4	5__-30 __5	6__80 __6	7__P5004 __7
BAQ38500030	360	385	20	22	-30	80	P5004	1__360 __1	2__385 __2	3__20 __3	4__22 __4	5__-30 __5	6__80 __6	7__P5004 __7
BAT02500010	700	725	20	22	-35	100	P5001	1__700 __1	2__725 __2	3__20 __3	4__22 __4	5__-35 __5	6__100 __6	7__P5001 __7
BA700600030	70	80	11.4	12.5	-30	80	P5004	1__70 __1	2__80 __2	3__11.4 __3	4__12.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA701300030	70	82	8.7	9.6	-30	80	P5004	1__70 __1	2__82 __2	3__8.7 __3	4__9.6 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA701700030	70	82	9.5	10.5	-30	80	P5004	1__70 __1	2__82 __2	3__9.5 __3	4__10.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA702600030	70	85	9.5	10.5	-30	80	P5004	1__70 __1	2__85 __2	3__9.5 __3	4__10.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA702800030	70	85	11.4	12.5	-30	80	P5004	1__70 __1	2__85 __2	3__11.4 __3	4__12.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA705400030	70	90	12	13	-30	80	P5004	1__70 __1	2__90 __2	3__12 __3	4__13 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA705900030	70	90	14.5	16	-30	80	P5004	1__70 __1	2__90 __2	3__14.5 __3	4__16 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA707300030	73	82.6	6.8	7.5	-30	80	P5004	1__73 __1	2__82.6 __2	3__6.8 __3	4__7.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA708200030	73	85.7	9.5	10.5	-30	80	P5004	1__73 __1	2__85.7 __2	3__9.5 __3	4__10.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA712100030	75	85	10.5	11.600	-30	80	P5004	1__75 __1	2__85 __2	3__10.5 __3	4__11.600 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA713200030	75	90	11.4	12.5	-30	80	P5004	1__75 __1	2__90 __2	3__11.4 __3	4__12.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA716200030	76.2	85.7	7.9	8.700	-30	80	P5004	1__76.2 __1	2__85.7 __2	3__7.9 __3	4__8.700 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA717600030	76.2	92.1	9.5	10.5	-30	80	P5004	1__76.2 __1	2__92.1 __2	3__9.5 __3	4__10.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA800700030	80	88	6.5	7.2	-30	80	P5004	1__80 __1	2__88 __2	3__6.5 __3	4__7.2 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA801000030	80	90	10	11	-30	80	P5004	1__80 __1	2__90 __2	3__10 __3	4__11 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA801400030	80	90	11.4	12.5	-30	80	P5004	1__80 __1	2__90 __2	3__11.4 __3	4__12.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA802200030	80	92	9	9.9	-30	80	P5004	1__80 __1	2__92 __2	3__9 __3	4__9.9 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA803400030	80	95	11.4	12.5	-30	80	P5004	1__80 __1	2__95 __2	3__11.4 __3	4__12.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA805100030	80	100	12	13	-30	80	P5004	1__80 __1	2__100 __2	3__12 __3	4__13 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA810500030	82.6	101.6	12.7	14	-30	80	P5004	1__82.6 __1	2__101.6 __2	3__12.7 __3	4__14 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA815600030	85	95	9.5	10.5	-30	80	P5004	1__85 __1	2__95 __2	3__9.5 __3	4__10.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA816300030	85	100	9.5	10.5	-30	80	P5004	1__85 __1	2__100 __2	3__9.5 __3	4__10.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA816700030	85	100	12	13	-30	80	P5004	1__85 __1	2__100 __2	3__12 __3	4__13 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA816700042	85	100	12	13	-35	100	P5008	1__85 __1	2__100 __2	3__12 __3	4__13 __4	5__-35 __5	6__100 __6	7__P5008 __7
BA821800030	88.5	108.5	15	16.5	-30	80	P5004	1__88.5 __1	2__108.5 __2	3__15 __3	4__16.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA200500030	20	28	5.5	6	-30	80	P5004	1__20 __1	2__28 __2	3__5.5 __3	4__6 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA200900030	20	28	5.7	6.3	-30	80	P5004	1__20 __1	2__28 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA201200030	20	28	6.5	7.2	-30	80	P5004	1__20 __1	2__28 __2	3__6.5 __3	4__7.2 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA201900030	20	30	7.3	8	-30	80	P5004	1__20 __1	2__30 __2	3__7.3 __3	4__8 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA203200030	20	32.7	9.5	10.5	-30	80	P5004	1__20 __1	2__32.7 __2	3__9.5 __3	4__10.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA207600030	22	30	5.7	6.3	-30	80	P5004	1__22 __1	2__30 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA208700030	22	32	7.3	8	-30	80	P5004	1__22 __1	2__32 __2	3__7.3 __3	4__8 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA214200030	24	30	5	5.5	-30	80	P5004	1__24 __1	2__30 __2	3__5 __3	4__5.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA215100030	24	32	7	7.7	-30	80	P5004	1__24 __1	2__32 __2	3__7 __3	4__7.7 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA216900030	25	33	5.7	6.3	-30	80	P5004	1__25 __1	2__33 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA218200030	25	35	7	7.7	-30	80	P5004	1__25 __1	2__35 __2	3__7 __3	4__7.7 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA218600030	25	35	7.3	8	-30	80	P5004	1__25 __1	2__35 __2	3__7.3 __3	4__8 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA219200030	25	40	10	11	-30	80	P5004	1__25 __1	2__40 __2	3__10 __3	4__11 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA221600030	25.4	31.8	4.5	5	-30	80	P5004	1__25.4 __1	2__31.8 __2	3__4.5 __3	4__5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA221600575	25.4	31.8	4.5	5	-30	105	P5030	1__25.4 __1	2__31.8 __2	3__4.5 __3	4__5 __4	5__-30 __5	6__105 __6	7__P5030 __7
BA226200030	28	35	6.5	7.2	-30	80	P5004	1__28 __1	2__35 __2	3__6.5 __3	4__7.2 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA226800030	28	36	5.7	6.3	-30	80	P5004	1__28 __1	2__36 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA227300030	28	38	7.3	8	-30	80	P5004	1__28 __1	2__38 __2	3__7.3 __3	4__8 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA227500042	28	43	11.4	12.5	-35	100	P5008	1__28 __1	2__43 __2	3__11.4 __3	4__12.5 __4	5__-35 __5	6__100 __6	7__P5008 __7
BA229800030	28.6	41.3	9.5	10.5	-30	80	P5004	1__28.6 __1	2__41.3 __2	3__9.5 __3	4__10.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA300400030	30	38	5.7	6.3	-30	80	P5004	1__30 __1	2__38 __2	3__5.7 __3	4__6.3 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA300800030	30	38	7	7.7	-30	80	P5004	1__30 __1	2__38 __2	3__7 __3	4__7.7 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA301200030	30	40	7	7.7	-30	80	P5004	1__30 __1	2__40 __2	3__7 __3	4__7.7 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA301600030	30	40	7.5	8.5	-30	80	P5004	1__30 __1	2__40 __2	3__7.5 __3	4__8.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA302300030	30	42	10	11	-30	80	P5004	1__30 __1	2__42 __2	3__10 __3	4__11 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA302300042	30	42	10	11	-35	100	P5008	1__30 __1	2__42 __2	3__10 __3	4__11 __4	5__-35 __5	6__100 __6	7__P5008 __7
BA301600120	30	40	7.5	8.5	-50	150	E0540	1__30 __1	2__40 __2	3__7.5 __3	4__8.5 __4	5__-50 __5	6__150 __6	7__E0540 __7
BA305800030	31.8	38.1	4.5	5	-30	80	P5004	1__31.8 __1	2__38.1 __2	3__4.5 __3	4__5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA823300030	88.9	101.6	9.5	10.5	-30	80	P5004	1__88.9 __1	2__101.6 __2	3__9.5 __3	4__10.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA825400030	88.9	108	15.9	17.5	-30	80	P5004	1__88.9 __1	2__108 __2	3__15.9 __3	4__17.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA900500030	90	100	6.5	7.2	-30	80	P5004	1__90 __1	2__100 __2	3__6.5 __3	4__7.2 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA900600030	90	100	11.4	12.5	-30	80	P5004	1__90 __1	2__100 __2	3__11.4 __3	4__12.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA902700030	90	105	11.4	12.5	-30	80	P5004	1__90 __1	2__105 __2	3__11.4 __3	4__12.5 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA907100030	90	110	12	13	-30	80	P5004	1__90 __1	2__110 __2	3__12 __3	4__13 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA907800030	90	110	14.5	16	-30	80	P5004	1__90 __1	2__110 __2	3__14.5 __3	4__16 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA914900030	94	108.5	12.7	14	-30	80	P5004	1__94 __1	2__108.5 __2	3__12.7 __3	4__14 __4	5__-30 __5	6__80 __6	7__P5004 __7
BA916500030	95	105	11.4	12.5	-30	80	P5004	1__95 __1	2__105 __2	3__11.4 __3	4__12.5 __4	5__-30 __5	6__80 __6	7__P5004 __7

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Symmetrical Rod and Piston Seal Prädifa series BA, Ultrathan® | Product Series

Inside Diameter (mm)

Outside Diameter (mm)

Element Height (mm)

Groove Width

Minimum Working Temperature (C)

Maximum Working Temperature (C)

Seal Material

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Symmetrical Rod and Piston Seal Prädifa series BA, Ultrathan®

Technical Specifications

Full Product Description

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