SeaSure Blocks offers a versatile range of marine-grade blocks designed for various applications, including high-load uses such as lifting systems and garage door mechanisms.
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1-2 weeks delivery time SeaSure 03.48 is a deck or mast mounted turning block manufactured from 316 stainless steel. It is designed for routing lines such as furling headsail lines back toward the cockpit and forms part of SeaSure’s range of low-maintenance marine turning blocks. The stainless steel construction provides a durable mounting solution for exposed deck and mast installations.
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$ 63.96
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1-2 weeks delivery time SeaSure 09.60 is a 28 mm double ended block designed for strong, lightweight operation across a wide range of load conditions. It uses carbon fibre needle roller bearings for smooth running under both high and fast-moving loads, with a breaking load of 500 kg and maximum rope diameter of 10 mm. The block can be used as a single sheave at either end to link systems together or as part of a 2:1 purchase arrangement.
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$ 89.57
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1-2 weeks delivery time SeaSure clew blocks are designed for reliable operation under demanding marine conditions, combining an engineered bearing system with lightweight aluminium alloy side plates. The range includes 42 mm, 50 mm and 70 mm sheave versions for ropes up to 8 mm, 10 mm and 12 mm respectively. Depending on the model, the blocks are suitable for boats from 7 m up to 16 m and use 20 mm or 30 mm webbing.
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$ 95.07
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1-2 weeks delivery time SeaSure 11.20 is a spare jaws kit designed specifically for SeaSure riveter 11.19. It provides a direct replacement for worn or damaged jaws, helping maintain consistent gripping and riveting performance. The kit is intended for maintenance of the 11.19 riveter and is supplied as a single piece.
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$ 357.45
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1-2 weeks delivery time SeaSure 16.13 is a dinghy spinnaker guy hook designed for quick and simple positioning of the spinnaker guy rope. The fitting allows the guy to be slipped into place efficiently when sailing on a tight reach. The range includes versions with or without an integral bolt to suit different mounting requirements.
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$ 26.63
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1-2 weeks delivery time SeaSure 16.33 is a trigger grip fitting designed for tapered or parallel wooden and aluminium poles up to 38 mm in diameter. It is manufactured from 316 stainless steel for strong, corrosion-resistant performance in marine environments. The fitting is supplied in packs of 20 pieces.
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$ 252.03
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1-2 weeks delivery time SeaSure 18.14DL is a 4-hole transom-mounted pintle designed for secure rudder or rudderstock attachment. It is manufactured from 316 stainless steel and uses four 5 mm countersunk fixing holes for mounting to the transom. The drop nose pin can be locked to retain the rudder assembly, while the fitting is designed to mate closely with SeaSure gudgeon ranges. Optional packing pieces, part 18.54, are available to increase the stand-off distance from the transom.
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$ 61.16
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1-2 weeks delivery time SeaSure 18.72W is a white hatch cover with an IP65 protection rating for marine installations. It features an O-ring seal to support watertight closure and a ribbed flange designed for secure fitting with sealant. The cover is supplied as a single piece.
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$ 31.71
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1-2 weeks delivery time SeaSure 19.27 is a tiller lock system designed for tiller-steered yachts and sports boats, particularly for short-handed sailing. The mechanism uses a sheave, lever cam and toothed slider mounted beneath the tiller to lock the tiller precisely in position. Turning the lever to port releases the lock immediately for manual steering, while the control rope can be snapped out of the block with a downward pull when rapid emergency release or complete disengagement is required.
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$ 118.47
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1-2 weeks delivery time SeaSure 22.14 is a 4-hole transom-mounted pintle designed for secure rudder attachment. It uses four 5 mm countersunk fixing holes and a 316 stainless steel pintle pin sized to fit SeaSure gudgeon ranges. A cross hole in the pin allows the rudder to be secured with an R-clip or split ring. Optional SeaSure 18.54 packing pieces can be used to increase the spacing between the fitting and the transom.
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$ 74.35
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1-2 weeks delivery time SeaSure 23.12 is a symmetrical back flap hinge manufactured from marine-grade 316 stainless steel and electro-polished for a durable, high-quality finish. The hinge measures 73 mm x 33 mm, and the hinge pin is welded in position for increased strength and security. Supplied individually.
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$ 31.79
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1-2 weeks delivery time SeaSure Half Back Flap Hinges are manufactured from marine-grade 316 stainless steel for durable use in marine fittings. The range includes a 73 x 33 x 33 mm version, SeaSure 23.13, and a larger 93 x 41 x 39 mm version, SeaSure 23.21. The 23.13 model is electro-polished and uses a welded hinge pin for added security, while both variants are designed for strong, corrosion-resistant installation.
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$ 27.73
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1-2 weeks delivery time SeaSure Stub Hinges are compact marine hinges manufactured from 316 stainless steel for durable, corrosion-resistant performance. The range includes SeaSure 23.14 with dimensions B 33 mm x C 33 mm and SeaSure 23.22 with dimensions B 41 mm x C 39 mm. Both variants are supplied individually and are intended for marine installation.
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$ 20.33
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1-2 weeks delivery time SeaSure 23.76D is a quick release universal joint for tiller extensions with a standard joint and rope core. Designed for reliable and smooth steering connections, it provides flexible movement between the tiller and extension while allowing quick disconnection when required. Suitable for a wide range of boat types and tiller extension systems.
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$ 20.91
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1-2 weeks delivery time SeaSure 23.80D is a quick release universal joint for tiller extensions with an extra flexible joint and rope core. It provides an articulated steering connection between the tiller and extension, allowing a greater degree of flexible movement while remaining securely connected during use. The quick release design allows the extension to be detached when required.
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$ 43.31
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1-2 weeks delivery time SeaSure parrel beads are designed for control lines, halyards, spi-locks, sea rail forestays and similar rigging applications. The range is available in 17/5 mm, 24/6 mm, 32/6 mm and 45/12 mm sizes, with black, blue, green, red, white, yellow and mixed-colour options. Single-colour variants are supplied in packs of 5 pieces, while mixed-colour variants are supplied in packs of 6 pieces. The centre holes can be drilled to accommodate larger line diameters.
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$ 4.33
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1-2 weeks delivery time SeaSure 316 stainless steel washers are polished, corrosion-resistant fastening washers for marine, technical and general hardware applications. The range includes eight size variants from M4 x 25 mm to M15 x 40 mm. All versions have a material thickness of 2 mm and are supplied in packs of 20 pieces.
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$ 86.74
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1-2 weeks delivery time SeaSure strap brackets are manufactured from marine-grade 316 stainless steel for universal fastening applications. The range includes 25 mm, 40 mm and 50 mm widths, with 40 mm and 50 mm versions available in packs of 20 or 100 pieces. The brackets are suitable for securing onboard equipment such as fuel tanks, batteries and life rafts, and can also be used as hanging strap brackets.
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$ 65.49
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1-2 weeks delivery time SeaSure stainless steel rope thimbles are designed to reinforce rope eyes and reduce abrasion where the rope bears against fittings or attachment points. The range includes sizes from 2 mm to 6 mm for marine and general rigging applications. Most variants are supplied in packs of 50 pieces, while the 4 mm size is also available individually.
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$ 89.04
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1-2 weeks delivery time SeaSure 03.55A is a heavy-duty mast block with a removable 38 mm plastic sheave, designed for routing furling headsail lines back toward the cockpit. It features a 316 stainless steel body with an electro-polished finish and a hinged action that allows the sheave to align with the rope as it leaves the furling drum. The block fits 25 mm stanchions and is suitable for ropes up to 10 mm in diameter.
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$ 116.98
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What are the key features of the SeaSure general purpose block and how does it perform in marine environments?
The SeaSure general purpose block, part of the 25mm bearing block range, is designed for high-load applications, making it ideal for use with abrasive ropes and systems requiring reliable performance. Featuring robust construction with steel side plates and rivets, the block ensures durability and smooth operation in marine environments. Its versatile design allows it to be used in various applications, from rigging systems to lifting mechanisms, offering efficient performance even under demanding conditions.
How do customer reviews reflect the durability and performance of SeaSure blocks in different marine environments?
Customer reviews highlight the durability and performance of SeaSure blocks, particularly the 25mm plain bearing block, which is praised for its robust construction, including features like steel side plates and rivets with an arnite coating. Reviewers consistently note how well these blocks handle high loads, even when used with abrasive ropes in demanding marine environments. The positive feedback reflects their reliability in both recreational and industrial applications, with users appreciating their smooth operation and resistance to harsh conditions like saltwater and UV exposure.
How does the plastic construction of SeaSure blocks compare to other materials in terms of durability and strength?
The plastic construction of SeaSure blocks offers a lightweight and cost-effective solution while maintaining strong durability for many marine applications. Compared to traditional materials like metal, plastic blocks are resistant to corrosion from saltwater and are less prone to rust, making them ideal for extended use in harsh marine environments. While plastic blocks may not have the same tensile strength as stainless steel, their design and use in systems such as high-load applications and abrasive rope handling ensure reliable performance when properly selected.