25mm Blocks | Baseline Marine Products Ltd

Pulley Blocks

A budget quality range of 25mm (1in) blocks in stainless steel with a Nylon sheave. Choose from a general purpose block, a stainless steel pulley block with removable pin or a stainless steel block with shackle, all suitable for up to 6mm rope.

Part No.	Product Description	Type	Rope Size	Our Price
3960	1" Pulley Block (Removable Pin)	Removable Pin	Up to 6mm	£2.40 Each
3961	1" Pulley Block with Bracket	Bracket	Up to 6mm	£3.60 Each
3962	1" Pulley Block General	General	Up to 6mm	£2.82 Each
3963	1" Pulley Block with Fixed Pin	Fixed Pin	Up to 6mm	£4.14 Each
3964	1" Pulley Block with Becket	Becket	Up to 6mm	£4.68 Each

25mm Single Blocks

Suitable for up to 6mm rope. A range of high quality 25mm single blocks from Seasure, all of which have been tested in the most extreme race conditions and proven over time, and you will often find them in use after more than 30 years! The high strength to weight ratio and simple construction give years of trouble free service.

The '00' range offers an unparalleled range of control line configuration opportunities. They feature hollow rivets for lightness and tough plastic sheaves that provide a good bearing surface allowing easy rotation under a range of load conditions. The robust electro-polished 316 stainless steel construction also gives a high chafe resistance should any feed or take-off misalignment occur. Made in the UK from 316 stainless steel and tough "Arnite" plastic.

Part No.	Product Description	Up to Rope Size/mm	Our Price
SS-00-03	Halyard Block 25mm	6	£8.70 Each
SS-00-05	General Purpose Block 25mm	6	£8.70 Each
SS-00-07	Single Block with Clevis Pin 25mm	6	£11.40 Each
SS-00-08	Single Block with Shackle 25mm	6	£13.92 Each
SS-00-09	Single Block with Hollow Rivet 25mm	6	£11.58 Each
SS-00-11	Single Block with Becket 25mm	6	£14.82 Each
SS-00-13	Single Block with V-Jammer 25mm	6	£19.26 Each
SS-00-29	Single Swivel Block	6	£29.04 Each
SS-00-39	Single Plastic Block 25mm	6	£8.34 Each
SS-27-54	Sheave only for 25mm Block	6	£1.02 Each

25mm Double Blocks

Suitable for up to 6mm rope. A range of high quality 25mm double blocks from Seasure, all of which have been tested in the most extreme race conditions and proven over time, and you will often find them in use after more than 30 years! The high strength to weight ratio and simple construction give years of trouble free service.

The '00' range offers an unparalleled range of control line configuration opportunities. Their classic design has stood the test of time. They feature hollow rivets for lightness and tough plastic sheaves that provide a good bearing surface allowing easy rotation under a range of load conditions. The robust electro-polished 316 stainless steel construction also gives a high chafe resistance should any feed or take-off misalignment occur. Made in the UK from 316 stainless steel and tough "Arnite" plastic.

Part No.	Product Description	Up to Rope Size/mm	Our Price
SS-00-20	Double Block with Clevis Pin 25mm	6	£16.02 Each
SS-00-21	Double Block with Shackle 25mm	6	£20.04 Each
SS-00-22	Double Swivel Hook Block 25mm	6	£32.88 Each
SS-00-23	Double Block with Becket 25mm	6	£24.36 Each
SS-00-25	Double Block with V-Jammer	6	£28.56 Each

25mm Treble Blocks

Suitable for up to 6mm rope. A range of high quality 25mm treble blocks from Seasure, all of which have been tested in the most extreme race conditions and proven over time, and you will often find them in use after more than 30 years! The high strength to weight ratio and simple construction give years of trouble free service.

The '00' range offers an unparalleled range of control line configuration opportunities. Their classic design has stood the test of time. They feature hollow rivets for lightness and tough plastic sheaves that provide a good bearing surface allowing easy rotation under a range of load conditions. The robust electro-polished 316 stainless steel construction also gives a high chafe resistance should any feed or take-off misalignment occur. Made in the UK from 316 stainless steel and tough "Arnite" plastic.

Part No.	Product Description	Up to Rope Size/mm	Our Price
SS-00-31	Treble Block with Shackle 25mm	6	£28.32 Each
SS-00-32	Treble Block with Centre Becket 25mm	6	£30.48 Each
SS-00-33	Treble Block with Becket 25mm	6	£30.36 Each
SS-00-35	Treble Block with V-Jammer 25mm	6	£33.96 Each

25mm Bolt Down Blocks

Suitable for up to 6mm rope. A range of high quality 25mm bolt down blocks from Seasure, all of which have been tested in the most extreme race conditions and proven over time, and you will often find them in use after more than 30 years! The high strength to weight ratio and simple construction give years of trouble free service.

The '00' range offers an unparalleled range of control line configuration opportunities. Their classic design has stood the test of time. They feature hollow rivets for lightness and tough plastic sheaves that provide a good bearing surface allowing easy rotation under a range of load conditions. The robust electro-polished 316 stainless steel construction also gives a high chafe resistance should any feed or take-off misalignment occur. Made in the UK from 316 stainless steel and tough "Arnite" plastic.

Part No.	Product Description	Up to Rope Size/mm	Our Price
SS-00-01	Bolt Down Block 25mm	6	£9.24 Each
SS-00-02	Deck Mounted Block 25mm	6	£9.78 Each
SS-00-15	Quarter Lead Block with Short Plate 25mm	6	£14.10 Each
SS-00-16	Quarter Lead Block with Long Plate 25mm	6	£13.68 Each
SS-00-17	Deck Lead Block 25mm	6	£10.74 Each
SS-00-19	Base Mounted Swivel Block 25mm	6	£22.80 Each
SS-01-18	Bolt Down Block (Metal Sheave)	6	£16.20 Each

25mm Brass Sheave Blocks

Made from Stainless Steel with a Chrome plated Brass sheave. For use in high load applications such as those imposed by wire and Dyneema halyards. The Stainless Steel side plates prevent highly abrasive ropes from cutting in. Suitable for 4mm Wire, Dyneema, Spectra or Kevlar. Breaking load 950Kg.

Part No.	Product Description	Up to Rope Size/mm	Breaking Load/Kg	Our Price
SS-01-01	Metal sheave block with shackle	4	950	£20.58 Each
SS-01-02	Metal Sheave Block with Clevis Pin	4	950	£18.48 Each
SS-01-03	Single Block with Becket 25mm	4	950	£19.44 Each
SS-01-08	Metal Spar Mounted Block (Flat Lugs) 25mm	4	950	£16.50 Each
SS-01-10	Inline Mast Block (Metal Sheave) 25mm	4	950	£15.60 Each
SS-01-14	Deck Lead Block	4	950	£16.50 Each

Shuttle Blocks

The carbon sheave is particularly hard wearing.

Part No.	Product Description	Price £	More Details
SS-00-40	Small Shuttle Block	£11.04 Each
SS-00-41	Large Shuttle Block	£12.96 Each

25mm Stainless Steel Ball Race

Small 1" (25mm) blocks made from stainless steel with a 1" stainless steel sheave, suitable for up to 4mm rope.

Part No.	Product Description	Our Price	More Details
SS-01-32	25mm Stainless Steel Ball Race	£25.32 Each

25mm Stainless Steel Ball Race

Small 1" (25mm) blocks made from stainless steel with a 1" stainless steel sheave, suitable for up to 4mm rope.

Part No.	Product Description	Our Price	More Details
SS-01-40	25mm Stainless Steel Bolt Down Ball Race for 4mm Rope	£23.46 Each

Base Mounted Swivel

Base mounted swivel for use with blocks in the 25mm range.

Part No.	Product Description	Price £	More Details
SS-05-07	Base mounted swivel	£17.40 Each

Sea Sure 19mm Ball Race Blocks

These lightweight high load capacity blocks are made from carbon fibre with stainless steel. The ball race is made with stainless steel balls with carbon fibre hub and cage.