For anyone that is struggling to blacklist items using tekkit customizer here is my config simple copy and paste into your config.text file. Remember to change names of worlds to your world or this wont work.
- yourworld - yourworld_the_end - Yourworld_nether

TekkitCustomizer:
ProtectSurfaceFromExplosives: true
EnforcementWorlds:
- yourworld
- yourworld_the_end
- yourworld_the_nether
Bans:
UsageBanned:
- 27526:*:Philosopher's Stone
- 239:*:Industrial TNT
- 7270:*:TNT Cart
- 27584:*:Ring of Arcana
- 27530:*:Evertide Amulet
- 22527:*:Destruction Catalyst
- 26524:*:Cannon
- 27531:*:Volcanite Amulet
- 26522:0:Dynamite
- 30214:0:SticktyDynamite
- 30215:0:Dynamite
OwnershipBanned:
- 27556:*:Catalytic Lens
- 22527:*:Destruction Catalyst
- 27530:*:Evertide Amulet
- 27537:*:Harvest Goddess Band
- 27583:*:Mercurial Eye
- 27584:*:Ring of Arcana
- 27538:*:Watch of Flowing Time
- 27531:*:Volcanite Amulet
- 26524:0:Cannon
- 126:10:Nova Catalyst
- 126:11:Nova Cataclysm
- 150:12:Igniter
- 237:0:Nuke
- 26522:0:Dynamite
- 30214:0:SticktyDynamite
- 30215:0:Dynamite
CraftingBanned:
- 27579:*:Infernal Armor
- 27580:*:Abyss Helmet
- 27564:*:Red Matter Pickaxe
- 27565:*:Red Matter Shovel
- 27566:*:Red Matter Hoe
- 27567:*:Red Matter Sword
- 27568:*:Red Matter Axe
- 27569:*:Red Matter Shears
- 27570:*:Red Matter Hammer
- 27572:*:Red Matter Katar
- 27573:*:Red Matter Morning Star
- 237:0:Nuke
- 26522:0:Dynamite
- 30214:0:SticktyDynamite
- 30215:0:Dynamite
PlacementBanned:
- 223:1:Tesla Coil
- 26522:0:Dynamite
- 30214:0:SticktyDynamite
- 30215:0:Dynamite
WorldBanned: []
RemoveUUMatterToNonRenewableItemRecipes: true